Expecting twins? Get your free, practical tips to prepare: Help me get ready!

37 Weeks Pregnant with Twins

Here’s what to expect when you are 37 weeks pregnant with twins:

Fetal Development

By 37 weeks in the twin pregnancy each of your twins may be well over 18″-19″ (46 cm) long and average the following measurements:

Head circumference: 13.25″ (337 mm)
Abdominal Circumference: 13″ (330 mm)
Femur Bone Length (about from the waist to knee): 2.75″ (70 mm)

What to Expect

Typical weight gain for Mom at this point is about one pound per week (0.6kg).

Total weight gain for the twin pregnancy so far will average between 38 to 54 pounds (17.2 to 24.5kg).

For more details on Mom’s health, see:
Mom & Baby at 37 Weeks Pregnant
Week by week Twins calendar: pregnancy in weeks 36-40

Pictures and Video

Here’s an ultrasound video of what you might see at 37 weeks pregnant with twins:

Belly Picture at 37 weeks:
37 Weeks Pregnant with Twins Belly
Picture by Gregory Katsoulis

If Your Twins Were Born This Week

Your twins are considered to term. They are typically born as healthy as their singleton counterparts. Twins born during the 37th week average a hospital stay of about 6 days and normally go home with Mom when she leaves the hospital.

What to Prepare This Week

When Mom is 37 weeks pregnant with twins, she is physically no longer able to do much preparation. Any leftover tasks you have will need to be done by Dad or someone else. Hopefully at this point you don’t have much left to do since your twins will arrive any day now.

Dad’s Thoughts

By the time Mom reaches 37 weeks pregnant with twins, she is extremely uncomfortable day and night. She is ready for the twins to be born NOW.

Previous: 36 Weeks | Next: 38 Weeks

View entire Twin Pregnancy Week by Week

Expecting Twins? This newsletter will help...

  • What to prepare for twins
  • How to survive newborn twins
  • Tips to better parent your twins

Sign up now and get your FREE copy of "7 Tips for Surviving Newborn Twins"

We respect your privacy.

Written by , author of The Dad's Guide to Twins

When You're Expecting Twins, Triplets, or Quads: Proven Guidelines for a Healthy Multiple Pregnancy by Dr. Barbara Luke and Tamara Eberlein
Babycenter's Average fetal length and weight chart