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

15 Weeks Pregnant with Twins

Here’s what to expect when you are 15 weeks pregnant with twins:

Fetal Development

By 15 weeks in the twin pregnancy each of your twins is 4″ (10 cm) from head to rump and weighs 2.5 ounces (70 grams) and averages the following measurements:

Head circumference: 4.5″ (114 mm)
Abdominal Circumference: 4″ (102 mm)
Femur Bone Length (about from the waist to knee): 0.7″ (18 mm)

What to Expect

Typical weight gain for Mom at this point is between 1 to 1.5 pounds/week (0.5 to 0.7kg).

For more details on Mom’s health, see:
Mom & Baby at 15 Weeks Pregnant
Week by week Twins calendar: pregnancy in weeks 12-16

Pictures and Video

Here’s an ultrasound video of what you might see at 15 weeks pregnant with twins:

Belly picture at 15 weeks:
15 Weeks Pregnant with Twins Belly

What to Prepare This Week

When Mom is 15 weeks pregnant with twins, she is likely growing out of her clothes (if she hasn’t already). It’s time to stock up on maternity clothes.

Dad’s Thoughts

Do you already have older children? By the time Mom reaches 15 weeks pregnant with twins, you’ve likely thought how can I love my twins as much as my other child(ren)? The good news is that you can! The challenges of the twin pregnancy and raising them will help form an even greater bond with your babies.

Previous: 14 Weeks | Next: 16 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