Here’s what to expect when you are 37 weeks pregnant with twins:
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)
Each baby is about the length of a stalk of Swiss chard.
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).
Pictures and Video
Here’s an ultrasound video of what you might see at 37 weeks pregnant with twins:
Belly Picture at 37 weeks:
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.
(RELATED: Don't reinvent the twin parenting wheel. Get my 7 Things Every Dad of Twins Needs to Know.)
Most twin parents report no NICU time for their twins born this week:
Matt B.: No NICU. Born 37 weeks and weighing 6 lbs even, 5 lbs 13 ozs.
Amanda R. said that one of her twins (Born at 37+3) needed NICU for 3 nights. “That twin needed help with body temperature and sucking. While we were still in the hospital. We stayed for 4 nights so he (born at 4lbs 15 oz) spent one night in the room with us. The other twin, born at 6 lbs 12 oz, was with us every night. We went home after 4 nights and have been good since.”
James F.’s twins were born at 37 and 3 and went home on the third day.
C.T.S. had boy/girl twins born at the end of 37 weeks. No NICU.
Meli’s twins were born exactly at 37 weeks with no NICU time.
Jennifer’s twins were born at 37 weeks 1 day. No NICU.
Mona’s twins were born at 37w1d, weighing 6lb 15oz and 6lb 8oz. No NICU.
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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.
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.
View entire Twin Pregnancy Week by Week
Sources: When You’re Expecting Twins, Triplets, or Quads: Proven Guidelines for a Healthy Multiple Pregnancy by Dr. Barbara Luke and Tamara Eberlein and Babycenter’s Average fetal length and weight chart