Baby in Uterus Week by Week for Kids

We are sure you are curious about how your pregnancy will progress, and how your baby will develop week to week over the next few months.

Your Baby'southward Growth: Formulation to Birth

Congratulations on condign pregnant! Nosotros are certain you are curious about how your pregnancy will progress, and how your baby will develop week to week over the adjacent few months. In this slideshow we volition wait inside the womb to see how a baby develops through the showtime, 2nd, and 3rd trimesters.

Step one of conception is when the sperm penetrates the egg to complete the genetic make-up of a human fetus.

Conception

Stride one of conception is when the sperm penetrates the egg to complete the genetic make-upward of a homo fetus. At this moment (conception), the sex activity and genetic brand-upwards of the fetus begins. About three days later, the fertilized egg cell divides rapidly and then passes through the Fallopian tube into the uterus, where it attaches to the uterine wall. The attachment site provides nourishment to the rapidly developing fetus and becomes the placenta.

After 4 weeks, the basic structures of the embryo have begun to develop into separate areas that will form the head, chest, abdomen, and the organs contained within them.

Baby'south Development at 4 Weeks

After 4 weeks, the basic structures of the embryo accept begun to develop into dissever areas that will form the head, chest, abdomen, and the organs contained within them. Small buds on the surface will become arms and legs. A dwelling house pregnancy test should be positive at this stage of evolution (most tests claim positive results ane calendar week after a missed period).

At 8 weeks, the fetus is about a half-inch long (1.1cm).

Baby'south Development at 8 Weeks

At 8 weeks, the fetus is near a one-half-inch long (i.1cm). Facial features such every bit developing ears, eyelids, and nose tip are present. The limb buds are now conspicuously arms and legs, while the fingers and toes are however developing.

At 12 weeks, the fetus has grown to about 2 inches (4.4cm) in length and may begin to move by itself.

Infant's Development at 12 Weeks

At 12 weeks, the fetus has grown to about ii inches (iv.4cm) in length and may brainstorm to movement past itself. The fingers and toes are discernible, and the fetal heartbeat may exist audible past Doppler ultrasound. The developing sex activity organs may be identified by ultrasound techniques.

At 16 weeks, the fetus is about 4 and one-half inches long and resembles an infant.

Babe'southward Development at 16 Weeks

At 16 weeks, the fetus is about iv and one-half inches long and resembles an baby; the eyes blink, the heartbeat is easier to locate, facial features (nose, oral cavity, chin and ears) are singled-out, and the fingers and toes are clearly developed; the peel on the fingers and toes fifty-fifty has singled-out patterns (fingerprints!). Women should be able to feel the uterus at nigh 3 inches (6.6 cm) below the omphalos; this is the beginning of the "babe bump" (abdominal swelling due to an expanding uterus) in some women.

At 20 weeks, the developing fetus is about 6 inches long (13.2 cm) and may weigh about 10 ounces.

Babe's Development at xx Weeks

At 20 weeks, the developing fetus is well-nigh 6 inches long (xiii.2 cm) and may weigh nigh ten ounces. The infant may begin to make movements that the mother tin feel at about nineteen to 21 weeks; this infant move is termed "quickening". The baby at this stage of development can move its facial muscles, yawn, and suck its thumb. The expanding uterus at 20 weeks is felt at the level of the bellybutton.

In the US, women that have prenatal care usually have an ultrasound done at 20 weeks to determine that the placenta is attached normally and that the baby is developing without any problems.

It's Fourth dimension for an Ultrasound

In the U.s., women that have prenatal care usually have an ultrasound done at 20 weeks to make up one's mind that the placenta is fastened ordinarily and that the baby is developing without whatsoever problems. The baby's movements tin can be seen with Doppler imaging, and usually the sex of the babe can be determined at this time, then if you want to be surprised about the sexual practice of your infant at commitment, let your doctor know earlier the Doppler ultrasound is started!

Shown here is a 2d ultrasound (inset) assorted with a 4D ultrasound, both at 20 weeks.

At 24 weeks, the baby may weigh 1.4 pounds and can respond to sounds.

Baby's Development at 24 Weeks

At 24 weeks, the baby may counterbalance ane.4 pounds and can respond to sounds. Doppler studies show the sound response by measuring movement and heartbeat rates. Sometimes the baby volition develop hiccups that the mother can feel! The baby's inner ear canals are developed at 24 weeks, and so researchers speculate the fetus can sense its position in the uterus.

At 28 weeks, the baby normally weighs about 2 and one-half pounds and has developed to the point that if the baby is birthed prematurely for any reason, the chances are good that the infant will survive, but usually would require a hospital stay.

Babe's Development at 28 Weeks

At 28 weeks, the infant normally weighs about 2 and half pounds and has developed to the point that if the baby is birthed prematurely for any reason, the chances are good that the infant will survive, but usually would require a hospital stay. Your doctor may hash out signs of premature labor and suggest you (and your partner) take classes on what to exercise at the fourth dimension of delivery of your full-term baby.

At 32 weeks, many babies weigh about 4 pounds, and have movements that the mother can feel.

Infant's Development at 32 Weeks

At 32 weeks, many babies weigh nearly iv pounds, and have movements that the female parent can feel. Your doctor may ask you to make notes about the infant's movements and hash out breastfeeding and other options along with scheduling visits every two weeks until y'all deliver the babe. Some women begin to leak a yellowish fluid from their breasts around this time; this is normal. This fluid is termed colostrum, and its presence indicates the breasts are primed to starting time producing milk for the newborn babe.

At 36 weeks the baby is about ready to be delivered and has reached an average length of 18.5 inches from head to heel length and weighs about 6 pounds.

Baby's Development at 36 Weeks

At 36 weeks the baby is about set to be delivered and has reached an average length of 18.5 inches from head to heel length and weighs virtually vi pounds. However, a infant's weight and length are quite variable and are influenced by the infant's genetics, the infant's sex, and many other factors. During this time, the baby has begun to rotate itself into the commitment position of head kickoff into the pelvis. At 37 weeks, the baby has completed evolution of all organ systems to a level that should allow it to survive and keep its growth exterior the uterus without the close hospital monitoring that is normally washed with premature babies; consequently, the pregnancy is considered "at term" at 37 weeks and beyond.

Delivery, due or birth date is calculated by estimating a 40 weeks delivery date, calculated after the first day of the mother's last period.

Birth!

Delivery, due or birth date is calculated by estimating a xl weeks delivery date, calculated afterwards the commencement day of the mother'southward last menstruum. This is an estimated date; the normal vaginal delivery birth tin can occur hands between 38 and nearly 42 weeks and is considered an early or late term pregnancy. However, most babies are delivered before 42 weeks. Depending on various circumstances and complications, the doctor may need to induce labor and delivery in some women, while others may require a surgical delivery (Caesarean department or C-department). For most people, especially first-time parents, birth of an infant is a life-irresolute event!

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IMAGES PROVIDED BY:

Dr. David M. Phillips / Visuals Unlimited / Getty Images
3D4Medical.com / Getty Images
Nestle / Petit Format / Photo Researchers, Inc.
Jose Manuel Gelpi Diaz / iStockphoto

REFERENCES:

Cleveland Clinic: "Fetal Development: Stages of Growth." Reviewed 04/16/2020.
UpToDate: "Cess of Fetal Lung Maturity"
American Pregnancy Association: "Fetal Development"

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Source: https://www.onhealth.com/content/1/fetal_development_stages