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36

37 weeks 
pregnant

38

Highlights this week

Labor approaching

You could go into labor at any time – though most women give birth in the two weeks before and after their estimated due date. You'll know you're in labor when your contractions are getting stronger, longer, and more frequent.

Cervix check

Your doctor or midwife may check your cervix to see how much it has effaced (softened and thinned) and dilated (opened). Dilation and effacement may not start until you go into labor, or it may gradually occur over several days or weeks toward the end of your pregnancy.

Almost to the finish line

You're getting close now, but doctors don't consider your baby "full term" until 39 weeks. Spending the next two weeks in the womb allows your baby's brain, lungs, and nervous system to fully mature.

Baby development at 37 weeks

Your baby's hair

Many babies have a full head of hair at birth, with locks from 1/2 inch to 1 1/2 inches long. Of course, some babies sport only peach fuzz. Don't be surprised if your baby's hair isn't the same color as yours. Also, it may fall out within the first six months and grow back a different color and texture!

Your baby's eyes

You may not see your baby's true eye color at birth. Some babies are born with their final eye color, but other newborns have dark blue or slate-gray eyes that gradually change to blue, green, hazel, or brown over the first year.

Gaining weight

Your baby is continuing to put on weight, and the added fat is smoothing out their skin. A padding of fat will help keep them warm after birth.

baby with a smile
Your baby at 37 weeks
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Your baby is about the size of a bunch of Swiss chard

bunch of swiss chard illustration
length
19.02
inches
head to toe
weight
6.68
pounds
medical chart icon

Pregnancy symptoms during week 37

Practice contractions

Braxton Hicks contractions – the intermittent uterine contractions that you may feel throughout pregnancy – may be happening more frequently now. As you approach delivery, Braxton Hicks may last longer and become more uncomfortable (although if they're truly painful, that's a sign they might be the real deal). Braxton Hicks often strike when you're dehydrated, when you've been active, or when you have a full bladder.

There's a silver lining to more frequent Braxton Hicks, or "practice contractions." Unlike contractions that happened earlier in pregnancy, Braxton Hicks in late pregnancy may help your cervix dilate and efface. This could make the main event progress more quickly.

It can sometimes be difficult to tell the difference between Braxton Hicks and true contractions. Usually, Braxton Hicks aren't painful, and they come at irregular intervals. They go away if you change positions or rest. True labor is more intense. Contractions usually start in your back and move toward the front of the belly, as opposed to Braxton Hicks, which start in the front. True contractions come at regular intervals, even if you move around or rest. They become more intense and closer together with time.

Once you're having true contractions, you may wonder when it's time to go to the hospital or birth center. If your pregnancy is uncomplicated, your doctor or midwife will probably have you wait to come in until you've been having contractions that last for about a minute each, occur every five minutes for about an hour, and are very uncomfortable.

Breasts leaking

Long before your baby is in your arms, your body is preparing for their first meal. That means you may notice leaking breasts during the last few weeks of your pregnancy. This can happen any time, but it's more common when your nipples are stimulated, say if you're exercising or having sex.

The liquid that comes from your breasts is colostrum – the first milk produced for your baby. It's thicker and more opaque than mature breast milk. It can also be sticky. And it's so packed with nutrients your baby needs that it's often called "liquid gold."

If your leaky breasts are bothering you or leaving marks, slip nursing pads into your bra to absorb the liquid. And if you aren't leaking, don't worry. That's perfectly normal, too, and it isn't a sign that your breasts won't be ready to do their job!

Vaginal discharge or spotting

You might notice an increase in vaginal discharge by 37 weeks, and it may be clear, pink, or even slightly bloody. You may see your mucus plug, the thick clump of mucus in your cervical canal that prevented bacteria from getting into your uterus during pregnancy. Once you're getting close to labor, or in labor, the mucus plug could come out gradually or all at once.

You may also see some "bloody show" (mucus tinged with blood) in the toilet or in your undies. Bloody show usually appears simultaneously or shortly after the mucus plug. It's formed as the cervix softens, thins out, and begins to dilate in preparation for labor, causing some blood vessels in the cervix to rupture.

If you have heavier spotting or bleeding or foul-smelling discharge, call your doctor or midwife right away. Also, if the discharge feels like a constant leaking or flow, call your provider. This could be a sign that your water has broken.

Feeling movement

Keep monitoring your baby's kicks, and let your provider know immediately if you notice a decrease. Though your baby's quarters are getting cozy, they should still be as active as before. Since they're getting stronger, their movements might become more noticeable, or even painful.

Most of the time, you'll feel movement throughout the day. But if your abdomen suddenly seems too quiet and peaceful, pay close attention and count your baby's movements. If you don't notice 10 distinct movements in two hours, call your provider. Decreased movement can be a sign of distress, and it's always better to err on the side of caution.

Gas and bloating

Now that you're 37 weeks pregnant, your baby is crowding your stomach, intestines, and other organs. That can lead to a host of symptoms including gas, bloating, constipation, and indigestion.

To keep gas and bloating at bay, eat smaller meals and don't drink too much in one sitting. After eating, go for a gentle walk to get your digestion moving. If you notice certain foods (like beans or broccoli) trigger your gas, avoid those for now.

Though gas is a normal part of pregnancy, call your provider if your intestinal discomfort ever feels more like abdominal pain or cramping, if you have blood in your stool, or if you have severe diarrhea or constipation.

Lower back pain

More than 60 percent of pregnant women have lower back pain. Especially at this point in pregnancy, it can be very painful – but there are many possible ways to get relief. First, think about your posture. Try not to slouch or arch your back. That's easier said than done when you're carrying a nearly full-term baby – but still, try to stand as straight as possible.

Although it may seem counterintuitive, exercise can help with lower back pain. Swimming is a particularly great workout during the last few weeks. The water takes pressure off your bones and joints, including that aching back. Pelvic tilts can also help a sore back.

Another relaxing remedy? A prenatal massage to loosen sore muscles. Treating yourself to an afternoon of self-care before your baby arrives is time well spent.

If none of these remedies help, talk to your provider. They may suggest other options, like physical therapy or medication.

Don't see your symptom?

Wondering about a symptom you have? Find it on our pregnancy symptoms page.

 
 
dear baby, I love you with all of my belly, I
baby in womb at 37 weeks, quite cramped in womb
Your body at 37 weeks
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Pregnancy checklist at 37 weeks

Plan your birth announcement

Figure out who you'll tell right after your baby arrives (or when you go into labor) and how you'll spread the word. You might post updates on your social media accounts, or call, text, or email the big news. Old-fashioned mailed announcements are beautiful, too.

Have your car seat checked

Experienced parents will tell you that car seat installation can be trickier than you think. It's not something you'll want to leave to the last minute, so make sure your car seat is installed by 37 weeks. You'll appreciate having one less thing to think about when it's go time.

If you're feeling unsure about your installation, go to an inspection station where certified technicians can check that your car seat is installed safely. Search online for a technician near you or reach out to your local fire or police department. They often have staff who are trained technicians.

Do some nesting

If you're suddenly feeling an urge to dust all the baseboards, organize your books, or scrub the fridge, you may be nesting. This is common: A poll of BabyCenter moms found that 73 percent nested during pregnancy, usually a few weeks before labor began.

Nesting looks different for different expecting moms. If you love to cook, you might find yourself preparing freezer meals or grab-and-go snacks for the postpartum weeks. Or, you may have a sudden desire to make sure the nursery is just right, with clothes washed, folded, and tucked away (laundry will never be this adorable again!).

While nesting is perfectly healthy, don't overdo it. Stay off ladders, take plenty of breaks, and drink lots of water during your busy days.

bumpie icon

37 weeks pregnant bellies

At 37 weeks, it's the perfect time to celebrate your bump. As uncomfortable as you may feel now, and despite all of pregnancy's ups and downs, your body has done an amazing job supporting and protecting your developing baby. So if you feel like it, go ahead and commemorate your almost-full-sized pregnancy belly.

Someday you'll want to show your child pictures of where they lived for nine months, so be sure to snap more photos of your belly in all its glory. You might also want to make a belly cast or decorate your belly with henna. Some expecting moms paint their bump with creative designs, or take a side-by-side picture with their partner comparing belly sizes.

37 weeks pregnant bellies
 

This week's video

Video

Sources

BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals. We believe you should always know the source of the information you're seeing. Learn more about our editorial and medical review policies.

ACOG. 2021. How your fetus grows during pregnancy. American College of Obstetricians and Gynecologists. https://www.acog.org/womens-health/faqs/how-your-fetus-grows-during-pregnancyOpens a new window [Accessed November 2022]

Cleveland Clinic. 2020. Fetal Development: Stages of Growth. https://my.clevelandclinic.org/health/articles/7247-fetal-development-stages-of-growthOpens a new window [Accessed November 2022]

Mayo Clinic. 2021. Fetal development: The 3rd trimester. https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20045997Opens a new window [Accessed November 2022]

MedlinePlus (ADAM). 2019. Fetal development. https://medlineplus.gov/ency/article/002398.htmOpens a new window [Accessed November 2022]

Hadlock FP et al. 1991. In utero analysis of fetal growth: A sonographic weight standard. Radiology 181 (1). https://pubs.rsna.org/doi/10.1148/radiology.181.1.1887021Opens a new window [Accessed November 2022]

Hadlock FP et al. 1992. Fetal cross-rump length: Reevaluation of relation to menstrual age (5-18 weeks) with high-resolution real-time US. Radiology 182: 5-1-505. https://pubmed.ncbi.nlm.nih.gov/1732970/Opens a new window [Accessed November 2022]

Vintzileos AM et al. 1984. The ultrasound femur length as a predictor of fetal length. Obstetrics & Gynecology 64(6): 779-82. https://pubmed.ncbi.nlm.nih.gov/6390277/Opens a new window [Accessed November 2022]

Hadlock FP 1984. Estimating fetal age: Computer-assisted analysis of multiple fetal growth parameters. Radiology 152: 497-501. https://pubmed.ncbi.nlm.nih.gov/6739822/Opens a new window [Accessed November 2022]

Kelly Burch

Kelly Burch is a freelance journalist covering health, entrepreneurship, family, and more. She's passionate about bringing complex topics to life through stories that are easy to read and informative. Burch lives in New Hampshire with her husband and two young daughters. When she's not at her desk, you'll find her kayaking or hiking in the wilderness around her home. Burch is currently writing a book about traveling around the United States in an RV with her family for seven months.

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