At 37 weeks, you're 9 months pregnant with the end in sight.

Your baby is practicing special skills this week (like sucking his thumb and grasping) that he'll show off upon his arrival.

At your next prenatal appointment, your practitioner will likely check your cervix for clues about how you're progressing.

Your Baby at Week 37

At a Glance

Dress rehearsal
Dress rehearsal
If your baby were born this week, he’d still be early term but will be full-term by week 39. He’s practicing for his grand entrance by inhaling and exhaling amniotic fluid, blinking and turning from side to side.
Hang on!
Hang on!
Your baby has developed more dexterity in his fingers. He can now grasp onto smaller objects, like a toe or his nose.
More thumbsucking
More thumbsucking
Your baby is likely sucking his thumb a lot these days in preparation for his feeding sessions after birth.

37 weeks pregnant is how many months?

If you're 37 weeks pregnant, you're in month 9 of your pregnancy. Only a few weeks left to go! Still have questions? Here's some more information on how weeks, months and trimesters are broken down in pregnancy.

How big is my baby at 37 weeks?

At 37 weeks pregnant, your baby's still packing on about a half an ounce per day or half a pound a week. In fact, until the end of week 38, he’s technically considered “early term.” At this age, the average fetus weighs about 6 pounds — though boys are likely to be heavier at birth than girls.

Baby’s stretching and moving

It's a little crowded in your uterus, so he may not be kicking as much. Instead, your baby's probably stretching, rolling a bit and wiggling — all of which you’ll be able to feel!

Practicing for birth

So what's keeping your little one busy while waiting it out until delivery day? Practice, practice, practice.

Right now, your tiny superstar is rehearsing for his big debut, simulating breathing by inhaling and exhaling amniotic fluid, sucking his thumb, blinking and pivoting from side to side. One day you feel his bottom on the left side, the next it's flipped around to the right!

Baby’s head is huge!

Here's an interesting fact: At birth, your baby's head — which, by the way, is still growing — will be roughly the same circumference as his chest.

And guess what's making a quite-literal impression these days on those shoulders and hips? Fat — causing little dimples in those cute elbows, knees and shoulders, along with creases and folds in the neck and wrists.

Your Body at Week 37

37 Weeks Pregnant

Dilation and effacement

It's anyone's guess when your baby will decide to make his appearance — will he be sociably early, fashionably late, or right on time? — but that doesn't stop your practitioner from guessing when labor will begin.

Just what is your doctor looking for? First, for dilation, or how far your cervix has opened. Specifically, your cervix needs to open to 10 centimeters for the baby to pass through into the birth canal.

Your health care provider is also looking cervical ripeness — aka the consistency of the cervix. It starts out being firm like the tip of your nose, then softens to the same texture as the inside of your cheek before labor. Next, your practitioner will check for effacement, or how thin your cervix is; it'll be 100 percent effaced before you push your baby out.

The position of your cervix, which moves from the back to the front as labor approaches, will also be assessed. And last but not least, your doctor or midwife will measure the position of the baby in relation to your pelvis. The lower down your baby is, the closer you are to delivery.

Although it all sounds very scientific, it's actually not. These processes can occur gradually, over a period of weeks or even a month or more in some women — or overnight.

So while all these signs are clues that you're indeed progressing, they're far from sure bets when it comes to pinpointing the actual start of labor. You can be very dilated and not have your baby for weeks. Or your cervix can be high and closed during an exam one morning, only to be open and ready for business — and labor — by noon.

Perineal massage

You already know about the mind-body benefits of massage — but have you heard of perineal massage?

Yes, it sounds — and can feel — a little awkward, but perineal massage may help to gently stretch your perineum, the area of skin between your vagina and rectum, which in turn can minimize the "stinging" that occurs when a baby's head crowns during childbirth. It may also help you avoid an episiotomy and tearing.

If you want to give it a shot, it's best not to DIY it the first time. Seek out a pelvic floor therapist, who can show you how to do it right. (Word to the wise: Be gentle.) Once you know what you're doing, you can keep up the good work — or have your practitioner take over during labor itself.

Pregnancy Symptoms Week 37

Changes in fetal activity
Changes in fetal activity
Heartburn or indigestion
Heartburn or indigestion
Bloody show
Bloody show
Varicose veins
Varicose veins
Pelvic pain
Pelvic pain
Leg cramps
Leg cramps
Stretch marks
Stretch marks
Breast changes
Breast changes
Pregnancy brain
Pregnancy brain
Insomnia
Insomnia

Tips for You This Week

Consider hiring a postpartum doula

Even if you aren’t hiring a doula for the delivery room, you may want to recruit one for the postpartum period. Postpartum doulas can help families transition from the third trimester to the fourth — helping to calm cranky infants, troubleshoot feeding problems, watching the baby while the parents rest and more.

You don’t need to make a decision just yet — many couples wait until after the baby is born before hiring a doula. The costs vary by region and the type of care you may need, but you can expect to pay between around $25 and $75 an hour.

Get ready for baby's hearing test

Don't be surprised to learn that your newborn's hearing will be tested before he even leaves the hospital (or in the first few days of life if he's born at home). And don't worry: Most babies pass with flying colors.

But it's important to get your baby's hearing checked as soon as possible since it's so critical to language development, which starts well before he says that adorable, much-anticipated first word.

If your baby doesn't pass the newborn hearing screening, don't fret  but do follow up as soon as possible with your pediatrician, who will likely refer you to an auditory specialist.

It's critical that you get any hearing issues taken care of early on to give your child the best chance at proper treatment, so he and those cute little ears can get the help they need from the get-go. Need more resources? The nonprofit Hearing First has a whole list of them.

Get an exercise ball

Looking for a good late-pregnancy workout? Get on the ball! An exercise ball is a safe and effective tool for strengthening your core muscles during pregnancy. And looking not-too-far ahead, it can also provide welcome relaxation and physical relief during pregnancy and labor.

Choose a high-quality ball made from burst-resistant material, and be sure you buy the correct size for your height: 22 inches (55 centimeters) for those shorter than 5-foot-3, and 26 inches (65 centimeters) for those taller (though check the instructions to be sure).

Finish baby's nursery

If you haven’t finished setting up the nursery, now’s a good time to try.

Tackle the bigger tasks first, like assembling the crib or bassinet (it may take longer than you think), and setting up the rocking chair if you’re planning on nursing.

After that, try washing and putting on the bedding, practicing using/storing the car seat and stroller (a doll or stuffie can be your baby's placeholder), and arranging the changing area stocked with diapers and wipes. Get help with any of the heavy lifting from your partner, a family member, or a friend.

You don't have to stress or go overboard, though. You have enough to do — and your baby won’t care what color the walls are painted.

Practice using your baby gear

You have the car seat, the stroller, the playard and the rest of the baby gear — now all you need is an actual baby. Before your little one makes that big arrival, grab an unwitting (and willing) baby stand-in — a doll, stuffed animal or even a very patient pet (within reason!) — and make a few practice runs.

Try strapping dolly into the car seat or strolling teddy around in your hallway, holding the little bundle in one hand while folding up the stroller in the other. If you feel silly using a faux baby, don't use anything at all. But do practice. You'll feel more prepared when it's showtime!

Meanwhile, you'll also want to be prepared to track your baby's feedings and diaper changes, which is easier said than done when you're taking care of a newborn on very little sleep. The solution? There's an app for that — more specifically, an app baby tracker for that. Trust us, it will help you seamlessly stay on top of how often to feed and change baby.

Stretch out your meals

Feeling more bloated than ever? You can blame the pregnancy hormone progesterone for slowing down your digestion — which then leads to bloating and cramping.

One way to beat the bloat: Eat your meals slowly. When you scarf down your lunch, you swallow more than just food. You also take in a lot of air, which will then settle into your stomach as gas bubbles.

How to stay sane if you’re on bed rest

Here are some things you can do if you're on bed rest: Stock a mini-fridge or cooler with lots of water, fruit, yogurt, cheese and sandwiches. Be sure the phone, magazines, books and TV remote are all within arm’s reach.

Try to establish a routine — even if the highlight is a soak in a tepid tub, then a nap or a morning on the couch, then an afternoon in bed. You’ll feel a little better if you give the day some sort of structure.

Keep your eye on the prize. Frame one of your ultrasound pictures and know that you are simply starting the parenting process a little earlier than most, doing what’s best for your child even if it’s a hardship for you. 

Remember: Every day you stay in bed or off your feet gives your baby the best chance at being born as healthy and strong as possible.

From the What to Expect editorial team and Heidi Murkoff, author of What to Expect When You're Expecting. What to Expect follows strict reporting guidelines and uses only credible sources, such as peer-reviewed studies, academic research institutions and highly respected health organizations. Learn how we keep our content accurate and up-to-date by reading our medical review and editorial policy.

  1. What to Expect When You're Expecting, 5th edition, Heidi Murkoff.
  2. WhatToExpect.com, Your Guide to Pregnancy Hormones, November 2022.
  3. WhatToExpect.com, Space-Saving Tips for Baby’s Nursery, August 2020.
  4. WhatToExpect.com, Ab Exercises That Are Safe and Beneficial During Pregnancy, December 2021.
  5. WhatToExpect.com, How to Buy a Baby Stroller, December 2020.
  6. American Academy of Pediatrics, First Month: Physical Appearance and Growth, August 2009.
  7. American College of Obstetricians and Gynecologists, How to Tell When Labor Begins, November 2021.
  8. American College of Obstetricians and Gynecologists, How Your Fetus Grows During Pregnancy, December 2021.
  9. Journal of Midwifery and Women's Health, Perineal Massage in Pregnancy, January 2016.
  10. KidsHealth From Nemours, Your Newborn's Growth, October 2018.
  11. March of Dimes, What is full-term? September 2018.
  12. Mayo Clinic, Bed Rest During Pregnancy: Get the Facts, February 2022.
  13. Mayo Clinic, Muscle Cramp, March 2023.
  14. Mayo Clinic, Stages of Labor and Birth: Baby, It's Time!, January 2022.
  15. National Institutes of Health, National Library of Medicine, Am I In Labor?, April 2022.
  16. National Institutes of Health, National Library of Medicine, National Center for Biotechnology Information, Length of Human Pregnancy and Contributors to Its Natural Variation, October 2013.
  17. National Institutes of Health, National Library of Medicine, National Center for Biotechnology Information, Perineal Massage in the Weeks Leading Up to Delivery Helps Some Women Avoid Episiotomy, March 2006.
  18. National Institutes of Health, National Library of Medicine, Your Baby in the Birth Canal, November 2022.
  19. The Global Library of Women's Medicine, The Normal Neonate: Assessment of Early Physical Findings, April 2009.
  20. U.S. Department of Health and Human Services, Office on Women's Health, Labor and Birth, February 2021.
  21. WhatToExpect.com, How Many Weeks, Months and Trimesters in a Pregnancy?, May 2022.
  22. WhatToExpect.com, Preterm Labor, May 2021.
  23. WhatToExpect.com, Cervical Dilation and Effacement, September 2022.
  24. WhatToExpect.com, Perineal Massage, April 2022.
  25. WhatToExpect.com, What Is a Postpartum Doula and Should You Hire One?, September 2021.
  26. WhatToExpect.com, What to Do About Bloating During Pregnancy, February 2021.

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