20 Weeks Pregnant

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Here's what's happening during Week 20 of your pregnancy:

20-weeks-pregnant

Your Growing Baby

A white, creamy substance called vernix caseosa protects the skin from its aqueous environment. Sweat glands form. Length: about 10 inches; weight: 9 ounces. Fetus fact: Starting now, immunities are being transferred from you to the fetus.

Your Growing Belly

Around now, you should feel a psychological boost: You've made it halfway already! It's a good time to find a childbirth class to educate you about labor and calm any anxieties. Plus, you'll meet other parents-to-be and possibly create friendships for both you and your child in the years to come.

Your care provider will now monitor your growth by measuring the height of your uterus with fingers or a tape measure. Your uterus is now about in line with your belly button. From now on, the top of your uterus will grow toward your rib cage at a rate of one centimeter a week.

Tips & To-Do's

Too big or too little

Starting at about 20 weeks, your doctor or midwife will measure your fundal weight, or distance from your pubic bone to the top of your uterus, at every prenatal visit. "It is a one-to-one correlation," Thoppil explains. "At 20 weeks, for instance, the measurement should be around 20 centimeters." If it deviates by 3 centimeters one way or the other, your care provider will most likely follow up with an ultrasound to see if the baby is too large or too small. Interesting facts to know as your baby bump grows >>

 

Things to think about this week: You're halfway there! Do you need a doula?  A doula is not trained to deliver babies, but rather lends support to women and their families, providing encouragement and information through late pregnancy, labor and birth. Find out more >>

 

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Pregnancy Milestones:

Below are some of the most important milestones of your pregnancy. Click on any week to read more, or view our Week-by-Week Pregnancy page to see your pregnancy at-a-glance.

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Week 4: Positive test: You're pregnant! You may be starting to feel bloated, crampy, tired and moody, and experiencing sore breasts, nausea/vomiting and a frequent need to pee.  But don't worry if you're not—that's normal.  Read more about being 4 weeks pregnant.

 

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Week 8: Your doctor may look or listen for the baby's heartbeat with an ultrasound. Once you see or hear it, your miscarriage risk drops to about 2 percent. He'll also give you an official due date—though very few women actually deliver on that day.  Read more about being 8 weeks pregnant.

 

 

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Week 10: Your inch-long baby is now called a fetus. While the icky side effects of pregnancy may be starting to abate, your anxiety about having a healthy baby might be increasing.  Read more about being 10 weeks pregnant.

 

 

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Week 15: The "window of opportunity" for many important screening and diagnostic tests opens this week, should you decide to undergo them.  Read more about being 15 weeks pregnant.

 

 

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Week 16: Sometime between 16 and 22 weeks, you'll start to feel your baby move.  Read more about being 16 weeks pregnant.

 

 

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Week 29: The basketball-sized lump in your belly may be inhibiting shoe tying, leg shaving and the like. The fetus is increasingly sensitive to light and sound.  Read more about being 29 weeks pregnant.

 

 

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Week 36: The baby may drop lower into your pelvis in preparation for delivery. This should make it easier to breathe—yet your pee breaks will become ever more frequent.  Read more about being 36 weeks pregnant.

 

 

Click here to read more about every week of pregnancy on our Week-by-Week Pregnancy page.