21 Weeks Pregnant

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Here's what's happening during Week 21 of your pregnancy:

21-weeks-pregnant

Your Growing Baby

Your baby now weighs about three-quarters of a pound and is approximately 10 1/2 inches long.

Your baby has begun her main project for the rest of your pregnancy: putting on weight. She regularly drinks amniotic fluid for hydration and nutrition, urinates in the fluid and breathes in and out (fortunately, the fluid pool refreshes itself every three hours). Her eyebrows and eyelids are fully developed. Taste buds are forming on her tongue. Her eyelids are still sealed, but her eyes are active.

Your Growing Belly

Some women report feeling better and more energized at this stage of pregnancy than they have at any point in their life. We hope you're one of them!

To safely build up your endurance for labor and for taking care of your baby later, take long walks outside or on a treadmill, ride a stationary bike or use an elliptical trainer.

To keep your uterus and pelvic-floor muscles toned, do Kegel exercises and have orgasms! If your doctor has told you to avoid sex because you're at risk for preterm labor, ask what he means by "sex" and which acts may be off-limits.

Tips & To-Do's

Let's Talk (Pregnant) Sex

If you do want to have sex, embrace the ubiquitous three-word Nike slogan. As long as your pregnancy is progressing normally, you can have sex as often as you like (some exceptions may include a history of miscarriage or preterm labor). Be aware that it’s pretty common for some women to experience bleeding during intercourse, especially in the first trimester. This is caused by the normal swelling of capillaries in the cervix, which can burst when irritated during sex. While such spotting or bleeding is generally nothing to worry about, you should still mention it to your doctor or midwife. If fears about ‘doing it’ are stressing you out, here’s what you need to know >>

Things to think about this week

The benefits of moving more during pregnancy begin immediately and last your whole life. Your baby will start reaping the benefits in utero, too. Here’s a laundry list of reasons to start exercising today, along with excuse-busting ways to overcome some common obstacles >>

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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.