Pregnancy Week 37

Your little one is almost here! Find out how baby-to-be is developing when you're 37 weeks pregnant, plus learn common signs of labor and plan your breastfeeding diet.

Week by week baby size image. Week by week baby size image.

How big is baby?

Your baby is as long as stalk of Swiss chard. Because he's running out of room in your uterus, he mostly stretches and wiggles, instead of delivering big kicks.

Baby's Length: 19.13in.
Baby's Weight: 6.30lb.
Fetus at Week 37 What the baby looks like at week 37 of fetal development. Med ART Studios Explore More

Baby's Development

The umbilical cord begins passing antibodies to your baby in preparation for delivery. By stockpiling antibodies, your baby will be better prepared for the disease and germs he'll encounter outside the womb. Your baby's senses are also getting more time to hone their burgeoning skills. He can hear and recognize your voice. Once he's born you'll be able to see him turn his head in your direction when he hears you speak. He knows his mom! Along with his hearing, his eyesight is improving each day. His fingers are also becoming more coordinated. He can grasp his face or toes. And after birth he'll be able to grab onto your finger.

Baby Week 37

Congratulations! Babies born at this stage are considered full term, weighing about 6½ pounds and measuring an average of 19 inches long.Babies born with blue or light gray eye color will often become darker over the subsequent six months as the eye's iris gains more pigmentation.At this stage, baby boy's testes have usually descended into the scrotum. Baby girl's vagina, clitoris and labia majora are now well-developed. In preparation for life outside the womb, your baby continues to practice breathing, moving around, sucking its thumb and blinking.
Week by week baby ultrasound image. Week by week baby ultrasound image. American Institute of Ultrasound in Medicine -

Week 37 Ultrasound

Sometimes your doctor or midwife will ask for a test to check how well your baby is doing. One indicator of your baby-to-be's well being is a measurement of the amniotic fluid. This can also be part of a test called a biophysical profile, which will also include watching the baby's various movements. In this image, the sonographer is measuring the deepest pocket of fluid in each of four areas of your uterus. As you can see, your baby is getting a bit crowded in there!

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Watch Baby's Growth

What Week 37 of Your Pregnancy is Really Like

Mom's changing body

Sex might be the last thing on your mind now, but some experts believe it's beneficial and most agree it's harmless. At this point, your cervix is engorged with blood and feels sensitive, so you may see a little spotting after sex. If you notice persistent spotting or bright red discharge, though, call your doctor.

Weekly Tip

Your baby could arrive any day now. Exciting, sure. Terrifying? Yes, definitely. But no matter how scared you might be, you're way better off knowing as much as you can about D-day. So remember: No one knows exactly what sets off the big event, but somehow your body knows when your baby's fully cooked, so it starts releasing chemicals (called prostaglandins) that thin, soften, and dilate your cervix. When produced in large amounts, these prostaglandins will trigger your uterus to start contracting, or making involuntary muscle movements to push your baby down and out. (At some point, your water will break, too, but this is more like a side effect of labor than an actual trigger.)

Pregnancy Confidential Podcast

What (REALLY) Happens During That First Week With Baby

Welcome to Week 37 of your pregnancy—and eek! Your baby is almost here. This has probably dawned on you no less than 30 trillion times in the last week and you might be starting to feel that panic over what this parenting thing will really be like—and how you'll really feel that week post-birth (will you even know what to do with a baby?). In this episode, we get real about what that very first week back from the hospital will be like, and we're not holding back...

This Week's To-Do List