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Pregnancy

Pregnancy by week

Learn about the stages of your pregnancy with our detailed week-by-week guide, detailing how your body is changing, plus the growth and development of your baby.

Your pregnancy: 19 weeks

Pregnancy by week

Your pregnancy: 19 weeks

What’s your baby up to at 19 weeks? Intrauterine mischief! She may be sucking her thumb, doing somersaults or pulling and grabbing the umbilical cord.

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Your pregnancy: 20 weeks

Pregnancy by week

Your pregnancy: 20 weeks

Believe it or not, 20 weeks heralds the midpoint of your pregnancy. If you go full term, your pregnancy will be about 40 weeks long. You're halfway there!

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Your pregnancy: 21 weeks

Pregnancy by week

Your pregnancy: 21 weeks

If you were able to see a picture of your baby around week 9, you might have thought he was "top heavy" because his head was so big. Not at week 21.

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Your pregnancy: 22 weeks

Pregnancy by week

Your pregnancy: 22 weeks

By 22 weeks, your waistline may have vanished, but you can probably still bend over easily, sit comfortably and walk without effort.

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Your pregnancy: 23 weeks

Pregnancy by week

Your pregnancy: 23 weeks

At 23 weeks, your baby's skin is wrinkly, but her intrauterine wrinkles will disappear as she gains more weight.

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Your pregnancy: 24 weeks

Pregnancy by week

Your pregnancy: 24 weeks

Your baby at 24 weeks can respond to touch and sound as she actively moves about the comfy, snug world of your womb.

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Your pregnancy: 25 weeks

Pregnancy by week

Your pregnancy: 25 weeks

At 25 weeks, tooth buds, which will develop into teeth after birth, are forming under your baby’s gums.

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Your pregnancy: 26 weeks

Pregnancy by week

Your pregnancy: 26 weeks

At 26 weeks, the blood vessels in your baby’s lungs are developing to prepare her for breathing when she is born.

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Your pregnancy: 27 weeks

Pregnancy by week

Your pregnancy: 27 weeks

Congratulations, you’ve entered your last trimester! At 27 weeks, your baby is taking a lot of developmental strides as she prepares to enter the world.

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Your pregnancy: 28 weeks

Pregnancy by week

Your pregnancy: 28 weeks

Hey, mom-to-be, you've just cruised into your seventh month of pregnancy!

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Your pregnancy: 29 weeks

Pregnancy by week

Your pregnancy: 29 weeks

At 29 weeks, your baby still has plenty more growing to do. Over the next couple of weeks, she’ll go through a growth spurt.

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Your pregnancy: 30 weeks

Pregnancy by week

Your pregnancy: 30 weeks

If you feel regular little tickles or spasms in your belly, it's a good bet that your baby has a case of intrauterine hiccups.

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Your pregnancy: 31 weeks

Pregnancy by week

Your pregnancy: 31 weeks

Your baby has been able to open her eyes in utero. At 31 weeks, she can also distinguish light from dark.

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Your pregnancy: 32 weeks

Pregnancy by week

Your pregnancy: 32 weeks

At 32 weeks, your baby is going through a period of rapid brain development. And, yes, that head of his is getting bigger!

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Your pregnancy: 33 weeks

Pregnancy by week

Your pregnancy: 33 weeks

Your baby’s lungs won’t be fully mature until right before she is born. But if she were born tomorrow, she would still have an excellent chance of survival.

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Your pregnancy: 34 weeks

Pregnancy by week

Your pregnancy: 34 weeks

At week 34, your baby’s bones are hardening. But the bones in his skull will remain flexible to help ease his passage through the birth canal.

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Your pregnancy: 35 weeks

Pregnancy by week

Your pregnancy: 35 weeks

At 35 weeks, your baby’s hearing is fully developed, her lungs are nearly mature, and her nervous system is continuing to develop.

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Your pregnancy: 36 weeks

Pregnancy by week

Your pregnancy: 36 weeks

The amount of amniotic fluid surrounding your baby will reach its peak at 36 weeks.

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Your pregnancy: 37 weeks

Pregnancy by week

Your pregnancy: 37 weeks

In some pregnancies, the baby is lying head down with her head facing toward the front of the mother's body. This is called “posterior presentation."

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Your pregnancy: 38 weeks

Pregnancy by week

Your pregnancy: 38 weeks

At 38 weeks, most of the lanugo (fine, downy hair) that covered your baby's body is gone, along with the vernix caseosa (whitish protective coating).

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