Pregnancy is something that will change the woman’s body week by week. Different things are happening with the woman’s body and also with the developing fetus in the womb. Here is Information of pregnancy week by week is discussed for pregnant women, that will help you understand what the body and the baby go through week by week.
Each week of pregnancy includes a description of your baby’s development, as well as an explanation of the changes taking place in your body. You’ll also find important medical information that will help keep you and your baby healthy.
1st week of Pregnancy
During pregnancy, your healthy habits and your baby’s health go hand in hand. While planning to conceive, take the time to prepare your body for motherhood.
The fetus is created when the sperm hits the egg. The fertilized egg will divide itself into an embryo and a placenta. The placenta will provide the food for the fetus. The baby itself is not created until close to the end of pregnancy week 1.
2nd week of Pregnancy
This may sound strange, but you’re still not pregnant! Fertilization of your egg by the sperm will only take place near the end of this week. Your uterine lining, which will nourish the baby, is developing, and your body secretes follicle-stimulating hormone (FSH), which stimulates an egg to mature. At the end of this week, you will be at the midpoint of your menstrual cycle (if you have a regular 28-day cycle), and ovulation will occur (your ovary will release an egg into the fallopian tube). This is when you’re most likely to conceive.
3rd week of pregnancy
Although this is the third pregnancy week, it is counted as the first week of the fetus. Even though you may not feel that you’re pregnant yet, you have a baby growing and developing inside of you! Although your baby was just conceived, he or she is working overtime. The fertilized egg goes through a process of cell division.
Your intake of protein, which is used to create new tissue, should increase during pregnancy. Adequate intake of certain nutrients, such as folic acid, protein, calcium, and iron, is essential for nourishing your baby In addition, calcium is necessary for the development of bones and teeth, so make sure you’re getting a good dose of dairy products, leafy green vegetables, and legumes. Iron is essential during pregnancy as you support the continual increase of your baby’s blood volume. Good sources of iron include red meat, legumes, eggs, and leafy green vegetables
4th week of pregnancy
This is a safe time to take a pregnancy test. This week your baby continues to implant in your uterus, burying itself deep within the endometrium. Four weeks of pregnancy, your baby (called an embryo), that will eventually develop into all of your baby’s organs and body parts.
Some women experience slight cramping and spotting of blood during this week while implantation is taking place, and they may mistake this for a period, as it often occurs around the time their monthly period was due.
5th week of pregnancy
Until now, the embryo has been a mass of cells, but by this point in your pregnancy a distinct shape begins to form. The neural tube, which will eventually form into the spinal cord and brain, runs from the top to the bottom of the embryo. A bulge in the center of the embryo will develop into your baby’s heart. At this time, the placenta develops, that an embryo receives nourishment from its mother.
6th week of pregnancy
This is when you might experience mood changes. The fetus is now between 4-8 mm.
6th week of pregnancy, your baby’s brain, nervous system and the eyes are developing at a rapid pace. Your baby’s heart will begin to beat around this time, and it may even be detected on ultrasound examination. And the beginnings of the digestive and respiratory systems are forming, too. Small buds that will grow into your baby’s arms and legs also appear this week.
Common pregnancy complaints may hit in full force this week. You may feel extreme fatigue as your body adjusts to the demands of pregnancy. And tender, aching breasts and nausea and vomiting (morning sickness) feelings occure.
7thweek of pregnancy
Your baby is constantly adapting to life inside the uterus. By this week, the umbilical cord has formed. It will be your baby’s connection to you throughout your pregnancy, providing oxygen and nourishment for your baby and disposing of your baby’s wastes. In addition, your baby’s digestive tract and lungs continue to form.
Pregnancy causes many changes in your cervix. By this week you’ll have developed a mucous plug, which forms in the opening of the cervical canal and seals off the uterus for protection. (Eventually you’ll lose this plug as your cervix dilates in preparation for labor.)
8th week of pregnancy
The fetus is roughly 9-14 mm and trapped in amniotic fluid. Fingers and toes are just beginning to form this week, and the arms can even flex at the elbows and wrists. The eyes are becoming more obvious because they’ve begun to develop pigment (color) in the retina (back of the eye).
Pregnancy symptoms such as a missed period, nausea, extreme fatigue, or tight clothes due to the swelling of your uterus have probably prompted you to wonder whether you’re pregnant.
9th week of pregnancy
9th week of pregnancy, your baby measures about 0.6 to 0.7 inches (16 to 18 millimeters) from crown to rump and weighs around 0.1 ounces (3 grams). The tip of the nose has developed and can be seen in profile, and flaps of skin over the eyes have begun to shape into eyelids, which will become more noticeable in the next few weeks.
The digestive system continues to develop. The anus is forming, and the intestines are growing longer. In addition, internal reproductive features, such as testes and ovaries, start to form this week. Your baby may make some first movements this week as muscles develop.
10th week of pregnancy
By week 10, all of your baby’s vital organs have been formed and are starting to work together. Your baby’s heartbeat can be seen by using a Doppler stethoscope, you should get to hear it for the first time.
The woman will feel additional tiredness and even pains in her breast. The fetus is now 45 mm long. It will now decide what sex it will be.
11th week of pregnancy
From this week until week 20, your baby will be growing rapidly — increasing in size from about 2 inches (5 cm) to about 8 inches (20 cm) from crown to rump. To accommodate all this growth, the blood vessels in the placenta are increasing in both size and number to provide the baby with more nutrients.
Although your baby’s reproductive organs are developing rapidly, the external genitals of boys and girls appear somewhat similar until the end of week 11. They will be clearly differentiated by week 14.
Nourishing your baby usually requires that you gain weight — and in most cases, the recommended weight gain is 25 to 35 pounds (11.33 to 15.87 kg) over the course of the pregnancy. If you were overweight or underweight before pregnancy, your health care provider may have different recommendations for weight gain.
12th week of pregnancy
Your baby’s brain continues to develop, and tiny fingernails and toenails start to form. Vocal cords are formed this week and baby’s kidneys are functioning which is the last of your first trimester.
Increased blood volume and pregnancy hormones work together to give you that glow. The greater blood volume brings more blood to the blood vessels and hormones increase oil gland secretion, resulting in a flushed, plumper, smoother skin appearance. Sometimes, though, the increased oil gland secretion can cause temporary acne.
13th week of pregnancy
Your baby now measures 7.4cm (2.91 inches) and weighs about 23 grams (0.81 ounce). It is about the size of a peach. At this stage the head is still about half the length of the crown to rump measurement, but by the time you are in your 21st week this will have changed to about a third of the crown to rump measurement.
Your baby’s face is also starting to look more human like. The eyes are starting to move closer together, and the ears will move to the normal position at the side of the head.
This week there are some other key developments which are taking place. Your baby’s intestines are starting to migrate from the umbilical cord and into the stomach. Another big development to do with processing of minerals and waste is that sometime during this week your baby will be passing its fist bit of urine into the amniotic fluid!
14th Week of Pregnancy
This week your baby measures 8.7cm (3.42 inches) and weighs in at around 43g (1.52 ounces). This is about the size of your fist.
Your baby’s ears have now moved from their normal position from the neck to the side of the head, and although the eyes are still moving to their final resting place it wont be long until they settle.
Your baby’s hands continue to develop and are now becoming more and more functional – as your baby is beginning to use his/her thumb and fingers.
There has been lots of development around your babys mouth recently. The roof of the mouth has been completed for a few weeks now, and this development continues with the development of the sucking muscles and the completion of the salivary glands which should begin to function during this week.
By the end of this week your baby will begin to make breathing, sucking and swallowing motions as the oesophagus, windpipe and the larynx are now present.
The sexual organs continue to develop and it will be getting easier and easier to establish the sex of your baby by examining the external genitalia by ultrasound.
Many women suffer from hemorrhoids during their pregnancy. Another common symptom of pregnancy is constipation, so be aware of what you are eating.
15th week of pregnancy
Your baby’s skin has been continuously developing and it is so thin and translucent that you can see the blood vessels through it. Hair growth continues on the eyebrows and the head. Your baby’s ears are almost in position now, although they are still set a bit low on the head.
Internally, your baby’s skeletal system continues to develop. Muscle development also continues and your baby is probably making lots of movements with his or her head, mouth, arms, wrists, hands, legs, and feet.
Organized women report in pregnancy somehow makes them forgetful, clumsy, and unable to concentrate. Try to keep the stress in your life to a minimum and take your “mental lapses” in stride they’re only temporary.
16th week of pregnancy
Your baby now weighs about 3.9 ounces (110 grams) and measures about 4.7 inches (12 cm) in length from crown to rump. Your baby can hold his or her head erect, and the development of facial muscles allows for a variety of expressions, such as squinting and frowning.
Between weeks 16 and 18 of pregnancy, your health care provider may offer you the maternal blood screening test, also known as a “triple marker” test or “triple screen,” which measures the levels of alpha-fetoprotein (AFP), a protein produced by the fetus, and the pregnancy hormones HCG and estriol in the mother’s blood. The results of these tests can tell moms whether their babies are at risk for (not whether they have) neural tube defects or chromosomal abnormalities such as Down syndrome. Talk to your health care provider about the risks and advantages of these tests.
17th week of pregnancy
At about 5.1 inches (13 cm) from crown to rump and weighing 4.9 ounces (140 grams), your baby is still very tiny.
The placenta, which nourishes the fetus with nutrients and oxygen and removes wastes, is growing to accommodate your baby. It now contains thousands of blood vessels that bring nutrients and oxygen from your body to your baby’s developing body.
You may notice that your breasts have changed considerably since your pregnancy began. Hormones are preparing your breasts for milk production — more blood is flowing to the breasts, and the glands that produce milk are growing in preparation for breastfeeding.
18th week of pregnancy
Ears move to their final position and they stand out from the head. And start brushing up on your lullabies — in the coming weeks, your baby will probably be able to hear and baby’s eyes are also developing. Your baby’s bones had been developing but were still soft. This week, they begin to harden, or ossify. Some of the first bones to ossify are those in the clavicles and the legs.
This is a good week to begin your search for a pediatrician or other health care provider for your new born. Schedule visits to meet with potential doctors to discuss pregnancy issues and immunization.
19 th week of pregnancy
Your baby is now covered with a white, waxy substance called vernix caseosa, which helps prevent delicate skin from becoming chapped or scratched. Premature babies may be covered in this cheesy coating at delivery.
Your baby is still tiny, but this week brings the development of brown fat, which will help keep your baby warm after birth. During the last trimester, your baby will add more layers of fat for warmth and protection.
You feel your baby’s first movements, which often happens between weeks 18 and 20. These first movements are known as quickening and they may feel like butterflies in your stomach or a growling stomach. Later in your pregnancy, you’ll feel kicks, punches, and possibly hiccups. Each baby has different movement patterns, but if you’re concerned or if the movements have decreased in frequency or intensity, talks to your doctor.
20th week of pregnancy
You’re halfway there! Twenty weeks into your pregnancy, your baby has grown significantly from that first dividing cell and now weighs about 11 ounces (312 grams) and measures about 6.3 inches (16 cm) from crown to rump. The baby is taking up increasing room in your uterus, and continued growth will put pressure on your lungs, stomach, bladder, and kidneys.
Under the vernix caseosa (a protective, waxy coating), your baby’s skin is thickening and developing layers. Hair and nail growth continue.
At this stage health provider recommend an ultrasound to determine the size and position of the fetus, and any structural abnormalities of bones and organs that are visible by this time. Depending on the position of the fetus, the sex can usually be determined by now.
21th week of pregnancy
The amniotic fluid that has cushioned and supported your baby in the uterus now serves another purpose. The intestines have developed enough that small amounts of sugars can be absorbed from the fluid that is swallowed and passed through the digestive system to the large bowel. Almost all of your baby’s nourishment, however, still comes from you through the placenta.
Your baby’s liver and spleen have been developed and responsible for the production of blood cells.
Exercise can be a great way to stay in shape during pregnancy. You are at higher risk for injury, so low- or non-impact exercise such as yoga, swimming, and walking are your best bets. Talk to your health care provider before beginning any exercise program while you’re pregnant.
22nd week of pregnancy
Taste buds have started to form on the tongue, and the brain and nerve endings are formed enough so that the fetus can feel touch. Your baby may experiment with this newfound sense of touch by stroking his or her face or sucking on a thumb, as well as feeling other body parts and seeing how they move.
Your baby’s reproductive system is also continuing to developing.
You may feel a squeezing sensation in your abdomen. Don’t worry, though: Your baby may be able to feel the contraction as it squeezes the uterus. If however, the contractions become more intense, painful, or frequent, contact your health care provider immediately because painful, regular contractions may be a sign of preterm labor.
23th week of pregnancy
At 23th week of pregnancy your baby weighs a little more than 1 pound (454 grams). Even though fat is beginning to accumulate on your baby’s body, the skin still hangs loosely, giving your baby a wrinkled appearance. Your baby’s daily workout routine includes moving the muscles in the fingers, toes, arms, and legs regularly. As a result, you may feel more forceful movements.
The closer you get to your delivery date, the more trouble you may have sleeping. Anxiety, frequent urination, heartburn, leg cramps, and general discomfort can translate into a short night’s sleep for a pregnant woman. But your baby’s health and your own depend on you getting adequate rest. Many doctors recommend that pregnant women sleep on their sides, not their backs or stomachs, so that blood flow to the placenta is not restricted. If you find this uncomfortable, try placing a pillow between your knees to relieve the pressure of your weight while lying on your side.
24th week of pregnancy
Your baby is still receiving oxygen through the placenta. But once birth occurs, his or her lungs will start taking in oxygen on their own. In preparation for that, your baby’s lungs are developing the ability to produce surfactant. Surfactant is a substance that keeps the air sacs in our lungs from collapsing and sticking together when we exhale, allowing us to breathe properly.
Because the inner ear — which controls balance in the body — is now completely developed, your baby may be able to tell when he or she is upside down or right side up while floating and making movements in the amniotic fluid.
An important prenatal test, glucose screening, is usually performed sometime during weeks 24 to 28. Gestational diabetes may also increase the chances that a woman would need a cesarean section because it can lead to the growth of very large babies. Gestational diabetes usually can be controlled by eating a well-planned diet and getting regular exercise, but sometimes medication, such as daily insulin, will be needed during the pregnancy.
25th week of pregnancy
You may notice that your baby has resting and alert periods. You’ll notice fetal activity more readily when you are more sedentary. Your baby’s hearing has continued to develop, too — he or she may now be able to hear your voice!
Pregnancy can cause some unpleasant side effects when it comes to digestion. The expanding uterus puts additional pressure on the stomach in the last few months of pregnancy. Try eating smaller, more frequent meals, and avoid spicy and fatty foods.
26th week of pregnancy
Your baby, weighing a little less than 2 pounds (907 grams), still looks wrinkly but will continue to gain weight steadily over the next 14 weeks until birth. Although your baby’s eyes have been sealed shut for the last few months, they will soon open and begin to blink. Some babies will be born with blue or gray-blue eyes (which may change color in the first year of life) and some will be born with brown or dark eyes. Eyelashes are growing in, as is more hair on the head.
27th week of pregnancy
By this first week of the third trimester, your baby looks similar to what he or she will look like at birth, except thinner and smaller. The lungs, liver, and immune system still need to fully mature, but if born now, your baby would have a very good chance of surviving.
As hearing continues to develop, your baby may start to recognize your voice as well as your partner’s.
Your body instinctively nourishes and protects your baby during pregnancy.
28th week of pregnancy
Your baby now weighs about 2 pounds, 2 ounces (1,000 grams) and measures about 10 inches (25 cm) from crown to rump. If your baby is headfirst or feet- or bottom-first (called breech position) in the womb. Babies who are in the breech position may need to be delivered by cesarean section. Your baby still has 2 months to change position, though, so don’t worry if your baby is in the breech position right now. Most babies will switch positions on their own.
At this stage your health care provider probably recommend blood tests. One thing blood tests measure is the Rh factor, If you don’t have it (if you’re Rh negative) but your baby does (is Rh positive), there is potential for your baby to have health problems, such as jaundice and anemia. Your doctor can prevent these problems by giving you a vaccine called Rh immune globulin at 28 weeks and again after delivery.
29thweek of pregnancy
Your baby continues to be active, and those first few flutters of movement have given way to hard jabs and punches that may take your breath away. If you notice a decrease in movement, do a fetal kick count: your baby should move at least 10 times in an hour. If your baby moves less, talk to your health care provider.
During pregnancy, iron is important for replenishing the red blood cell supply. You should be eating at least 30 milligrams of iron each day. Because iron deficiency is common during pregnancy, your health care provider may recommend that you receive a blood test to check your iron level. If it’s low, you may be prescribed an iron supplement.
30th week of pregnancy
Now weighing about 3 pounds (1,400 grams) and measuring about 10.8 inches (27 cm) from crown to rump, your baby continues to gain weight and layers of fat. This fat makes the baby look less wrinkly and will help provide warmth after birth.
In preparation for respiration after birth, your baby will mimic breathing movements by repeatedly moving the diaphragm. Your baby can even get the hiccups, which you may feel as rhythmic twitches in your uterus.
Constipation is a common complaint of pregnancy. The pregnancy hormones that allow you to maintain your pregnancy also slow the digestive process considerably. Exercising regularly and eating foods high in fiber, such as vegetables and whole grains, are great ways to keep everything regular.
31th week of pregnancy
By now your baby is urinating approximately several cups of urine a day into the amniotic fluid. He or she is also swallowing amniotic fluid, which is completely replaced several times a day.
This is time to you decided whether to breastfeed or formula feed your baby. This is recommended that breast milk as the best form of infant nutrition. The milk glands in your breasts may have started to make colostrum by now. Colostrum is the pre-milk that provides your baby with calories and nutrients for the first few days. For some women, it is thin and watery. For others, it is thick and yellowish.
32th week of pregnancy
The final touches are being placed on your baby masterpiece. Eyelashes, eyebrows, and the hair on your baby’s head are evident. At about 4 pounds (1,800 grams) and 11.4 inches (29 cm) from crown to rump, your baby would have an excellent chance of survival outside the womb if you delivered now.
During your prenatal visits, your health care provider will monitor your blood pressure, urine, and any swelling that may develop, but symptoms such as sudden weight gain, swelling in the hands or face, headaches, or changes in vision can be signs of preeclampsia. This condition causes high blood pressure and protein in the urine. Be sure to tell your healthcare provider if you experience any of these symptoms, since this condition can affect both the mother and fetus during the second half of pregnancy.
33th week of pregnancy
In these last few weeks before delivery, the billions of developed neurons in your baby’s brain are helping him or her to learn about the in-utero environment, your baby can listen, feel, and even see somewhat. Your baby’s eyes can detect light and the pupils can constrict and dilate in response to light. Like a newborn, your baby sleeps much of the time and even experiences the rapid eye movement (REM).
Your baby’s lungs are almost completely matured. Fat will continue to be deposited on your baby’s body for protection and warmth. Babies gain a good deal of their weight in the final few weeks before birth.
With labor and delivery only 2 months away, you may be considering how you’ll cope with pain during childbirth. Among the things you’ll want to learn about are the most commonly used techniques for pain relief.
34th week of pregnancy
Maternal calcium intake is extremely important during pregnancy because the baby will draw calcium from the mother to make and harden bone. If a pregnant woman doesn’t get enough calcium during pregnancy, it can affect her own bones because the developing fetus will take minerals from the mother’s skeletal structure as needed. By now most babies will be in position for delivery.
Fatigue is a common complaint of late pregnancy. Difficulty sleeping, aches and pains, weight gain, and anxiety about labor, delivery, and taking care of a newborn may contribute to your exhaustion. Rest as much as you can and take naps if possible.
35th week of pregnancy
Your baby already weighs about 5 pounds, 5 ounces (2,400 grams), but this week begins your baby’s most rapid period of weight gain about 8 to 12 ounces (226 to 340 grams) each week! Fat is being deposited all over your baby’s body, especially around the shoulders.
Because of this increasing size, your baby is now cramped and restricted inside the uterus — so fetal movements may decrease, but they may be stronger and more forceful. If your baby is in a headfirst position, his or her head will rest on your pubic bone in preparation for labor.
The bond you may already feel with the baby growing inside of you will only grow stronger once your baby is born.
36th week of pregnancy
The wrinkly, tiny fetus you may have seen on earlier ultrasounds has given way to an almost plump baby. There is fat on your baby’s cheeks, and powerful sucking muscles also contribute to your baby’s full face. Your baby now weighs a little under 6 pounds (2,721 grams).
The bones that make up your baby’s skull can move relative to one another and overlap each other while your baby’s head is inside your pelvis. This phenomenon is called molding, and it helps the baby pass through the birth canal. Don’t be surprised if your baby arrives with a pointy or misshapen head! After a few hours or days, your baby’s head will be back to a rounded shape.
Starting this week, you may begin to see your health care provider every week. Your doctor or midwife may give you an internal exam to determine if cervical effacement (thinning of the cervix) or dilation (opening of the cervix) has begun. You may experience engagement (also known as lightening), which is when the baby drops into the mother’s pelvis in preparation for labor. Your appetite may return because the baby is no longer putting as much pressure on your stomach and intestines.
37th week of pregnancy
This week, your baby is considered full-term! But your baby hasn’t stopped growing yet. He or she continues to develop fat at the rate of half an ounce (14 grams) a day. In general, boys weigh more than girls at birth.
Your baby has developed enough coordination to grasp with the fingers. If shown a bright light, your baby may turn toward it in your uterus.
After this week, you may lose the mucous plug that sealed off your uterus from infection. The mucous plug can be lost a few weeks, days, or hours before labor and is thick, yellowish, and may be tinged with blood. As the cervix dilates in preparation for the labor, the plug is discharged from the body. Any discharge you may be having consult your health care provider.
38th week of pregnancy
Your baby weighs about 6 pounds, 6 ounces (2,900 grams) by now and measures about 13.4 inches (34 cm) in length from crown to rump. Fat is still accumulating, although growth is slower now. You may notice that your weight gain has decreased or ceased.
Since your baby has had the muscles to suck and swallow amniotic fluid, waste material has been accumulating in his or her intestines.
If you’re having a boy, his testicles have descended into the scrotum, unless he has a condition called undescended testicle. If you’re having a girl, the labia are now completely developed.
Because your baby is engaged in your pelvis, your bladder is extremely compressed, making frequent bathroom trips a necessity.
39th week of pregnancy
Umbilical cords, which carry nutrients from the placenta to the baby, vary in size but average about 22 inches (55 cm) long and half an inch (1-2 cm) thick. Sometimes the umbilical cord can become wrapped around a baby’s neck. Generally, this doesn’t cause problems, although a cesarean delivery could be required if it causes pressure on the umbilical cord during labor or delivery. A true knot in the umbilical cord is much less common, occurring in only about 1% of pregnancies.
Your body has been supplying the baby with antibodies through the placenta that will help the baby’s immune system fight infection for the first 6-12 months of life.
The sign of labor is the rupture of your amniotic sac, could happen any day now. When their water breaks, some women experience a large gush of water and some feel a steady trickle. Many women don’t experience their water breaking until they’re well into labor. Others need to have their water broken by their health care providers to get their labor started or to speed it up. If you think your water has broken or you are experiencing regular contractions, contact your health care provider.
Braxton Hicks contractions may become more pronounced. Also called “false labor,” these contractions may be as painful and strong as true labor contractions but do not become regular and do not increase in frequency as true contractions do.
40th week of pregnancy
After many weeks of anticipation and preparation, your baby is here! A baby born at 40 weeks weighs, on average, about 7 pounds, 4 ounces (3,300 grams) and measures about 20 inches (51 cm).
Because of the presence of your hormones in your baby’s system, your baby’s genitals (scrotum in boys and labia in girls) may appear enlarged.
Right after birth, your health care provider will suction mucus out of your baby’s mouth and nose, and you’ll hear that long-awaited first cry. Your baby needs any special care to adjust to life outside the womb, it will be given and then your newborn will be placed in your waiting arms.
This week you’ll experience the moment you’ve been anticipating — your introduction to your baby.
41st and 42nd week of pregnancy
It is not uncommon that the estimated date of birth is not figured out correctly. If your labor isn’t progressing, or if your health or your baby’s health requires it, your health care provider may induce labor by artificially rupturing the membranes or by administering the hormone oxytocin or other medications. If your pregnancy is high risk or if there are any other potential complications, you may require a cesarean section delivery.
Months of waiting are over. Your new born in your hand.
The Best Wishes and Good luck with your baby
Trimesters of Pregnany
Pregnancy and Diabetes
Exercise in Pregnancy
Physical Activities in Pregnancy