Here’s what to expect when you are 34 weeks pregnant with twins:
Fetal Development
By 34 weeks in the twin pregnancy your twins are almost 17″ (45 cm) in length from head to foot. Each baby averages the following:
Head circumference: 12.5″ (312mm)
Abdominal Circumference: 12″ (302mm)
Femur Bone Length (from waist to knee): 2.5″ (64mm) which is about the height of a US dollar bill
Each baby is about the size of a cantaloupe.
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What to Expect
Typical weight gain for Mom at this point is about one pound per week (0.6kg).
(RELATED: Still expecting twins? Will you be having two boys, two girls, or boy/girl twins? Answer these quick questions to see what several old wives’ tales claim you’ll be having….)
Total weight gain for the twin pregnancy so far will average between 36 to 52 pounds (16.3 to 23.6kg).
Pictures and Video
Here’s an ultrasound video of what you might see at 34 weeks pregnant with twins:
Belly picture at 34 weeks:
Picture by Jenn Raynes
If Your Twins Were Born This Week
Your twins are late preterm and the odds of survival are very good. They are in good company as many twins are born during this period. Twins born during the 34th week have an increased risk of permanent health issues but generally speaking are healthy. Twins born this week average a hospital stay (including the NICU) of about 11 days.
Here are some experiences other twin parents had:
Kat E.’s twins were born at 34 weeks and weighed 6lb 10oz and 6lb 6oz. Their NICU time was due to jaundice and one twin had to have a CPAP to help with breathing.
(RELATED: Expecting twins? Avoid these 4 critical mistakes expectant twin parents make.)
Susy H. has two sets of twins. Her boy set spent 10 days in the NICU. Born at 34 weeks, they weighed 4lb 9oz and 4lb 12oz. Her girl set spent 10 days, also born at 34 weeks, they weighed 6lbs and 4lbs.
Karli M. had her twins at 34 weeks and 6 days (Baby Girl 4lbs, 15oz, Baby Boy 6lbs, 3oz.). They were in the NICU for 19 days. Their biggest challenge was eating their whole bottle consistently for over 24 hours.
Randy H. had boy/girl twins born at 34 weeks. His son was 4lbs 7oz and spent 10 days in the NICU. His daughter was 4lbs 2oz and spent 28 days there.
Katie O.’s twins were both 4 lb 11 oz, born at 34 weeks 5 days. NICU time for Baby A was one week and for Baby B: 8 days.
(RELATED: Still expecting twins? Will you be having two boys, two girls, or boy/girl twins? Answer these quick questions to see what several old wives’ tales claim you’ll be having….)
Tiffany G. had her twins at 34 weeks, weighing 4 lbs 7 oz and 4 lbs 1 oz. Baby A spent 2 weeks and 4 days in the NICU while baby B was there for 3 weeks (he was still using the feeding tube for most of his feedings).
Ryan S. had fraternal twin boys who were born at 34 weeks, 6 days (5lbs 13oz and 5 lbs 12oz) via vaginal birth. One was discharged after 3 days while his brother had to go to the NICU for a few weeks due to breathing and heart rate issues.
Peter Esbrandt’s twin girls were born at 34 weeks and spent about a month in the NICU.
Aaron Rieder’s twins were born at 34 weeks and one was in the NICU for 2 weeks, the other for 34 days.
Andrew Curfman’s twin girls were born at 34 weeks weighing 4 lbs 15oz and 4 lbs 9oz and then spent 24 days in the NICU.
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What to Prepare This Week
When Mom is 34 weeks pregnant with twins, it is a great time to pack your bag for the hospital if you haven’t already. Remember to take supplies for Mom, the twins, and Dad.
Your Fellow Parents at 34 Weeks Pregnant with Twins
Jennifer E. – “34 weeks and extremely uncomfortable. Looking forward to meeting them hopefully soon.”
Russ E. – “We are 34 weeks, 2 days with fraternal boy/girl twins. Mom is in severe lower left back pain and hasn’t gotten much sleep for the last couple weeks. We have tried a lot of things and I feel bad for her! Nursery is ready, car seats are in the van, and bags are packed!”
Dad’s Thoughts
By the time Mom reaches 34 weeks pregnant with twins, you are not sure if you are mentally ready for twins. Nevertheless, they are on their way! Enjoy the quiet moments you have now since life will get turned upside down when the twins arrive.
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Still wondering how to prepare for your twins? I cover specific things you should know and prepare for in my Dad’s Guide to Twins book. Learn more about the book here.
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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
I had a vaginal delivery of mon-mon twins at 34 weeks (labor was held for about a month). Weights: 4lb 7oz and 4lb 13oz. No complications, and expect for the initial monitoring right after delivery, both were ready to be released the following day. However, we did spend a week in the hospital due to my blood pressure sky rocketing.
@Cynthia – thank you for sharing your experience. I’m glad the babies were healthy and you were able to recover from your high blood pressure.
Great article! I’m currently 34 weeks pregnant with twins and I can definitely relate to some of the things you mentioned. The tiredness is real! I’ve been feeling some contractions too, but I’m trying to stay positive and take things one day at a time. Thanks for sharing your experience!
Hey Joe!
What a pleasure reading your weekly updates. They are really helping us out with what to expect.
I am in my 34th week with di/di boy & girl! Unfortunately, this is my second pregnancy suffering from a severe case of a condition called Cholestasis. This pregnancy, it is a lot worse with a lot more risk. The cholestasis flared up around 3-4 months in, and since then, I’ve gotten an average of 10-15 hours of sleep a week. I am struggling with severe and unsatiable itching, as well as jaundice. Last week we received good and bad news… I will be induced around Fourth of July at 36 weeks, however, we run the risk of stillbirth or births. We are staying calm and collected, with lots of praying.
@Ella Mae – hope the next few weeks go smoothly and you have a healthy delivery of your twins
Thank you Joe! Will keep you updated!