Mono/di twin mamas come in please!

reillyroowho · November 2011

My ID twin boys share a placenta but have separate sacs. We are being closely watched for TTTS and when they last measured them at 16 weeks there was a 16% size discrepency. I feel like each U/S we hold our breath until we know things look okay. I need some reassurance that things will go well and that even with the size difference (and amniotic fluid difference) that things will be okay. The perinatologist said that we have to just "wait and see" that things progress okay. What has your experience been?

Mrs. Alice · November 2011

I know how you feel. I was always on edge before my u/s. If you are being watched closely for TTTS that is great. I don't think most Dr.'s become concerned about size difference until it reaches above 20% or one is in the 10 percentile or less. Since you are being monitored, hopefully your Dr. will pick up on any complications early. With my twins the concerns started happening at 22 weeks. I won't lie, it was horribly scary, stressful, and the hardest thing I've been through but in the end it I got 2 healthy babies. There are plenty of other mo/di moms on here who sailed through their pregnancies with little to no complications.

kiwi443 · November 2011

I'm also being monitored closely. One of the babies just recently fell under the 10th percentile, so we've started biophysical profiles every other week. I've been having, and will continue to have, growth checks bi-weekly. The doctors said that as long the size discrepancy remains fairly constant, both babies should be fine.

I hope you have a healthy, complication-free pregnancy.

Jeffsgurl86 · November 2011

I had mo/di twin boys too. At their big growth ultrasound around 18-19 weeks there was an 18% size discrepancy. The Docs mentioned TTTS( I already knew it could be an issue with mo/di twins) and had us really worried. As they continued to grow, baby A still always measured smaller, but the percent difference between the two of them gradually decreased. They were born 7 lbs. 4 oz. and 7 lbs. 14 oz. Even now, my baby B is WAY bigger than baby A. I hope that your little guys do well in the weeks to come. Hang in there momma!

MamaCrystal · November 2011

The size discrepancy between our girls varied during the pregnancy, but never got to a worrisome level. (There was one u/s I was worried about, but my peri set my mind at ease.) Our girls were born weighing 6lbs4oz and 6lbs13oz.

amy1007 · November 2011

I have mo/di girl but never had any size discrepencies. I hope everything goes well!

Mrs_MBed · November 2011

I'm having mono/di boys and we've been very lucky that they have been measuring either the same or within a day or two of each other.

GL with your LO - wishing you an uneventful and healthy rest of your pg.

ETA: I am nervous at the beginning of every MFM appt and usually don't relax until its over. I am also being monitored for TTTS and having cervical checks (via u/s) since I have a history of PTL.

miragetdp · November 2011

I am currently 28 weeks with mo/di boys and they have had a size discordance of 25% all the way up to 34% and back to 25% since my first u/s at 14 weeks. I'm monitored weekly for TTTS because of such a large percentage difference and they look fantastic every time we go. Our specialist kinda freaked us out with all the problems that there could be because of the size difference but there have been no complications at all. I think doctors tend to freak you out a little, partly because it's their job to inform you and partly because you'll be happily surprised when all is well. I've read many many many stories of identicals with large size discrepancies and everything comes out fine. I wouldn't worry, you and your babies will do great!

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