Weight Discrepancy

About 6 weeks ago my B/G twins were 2 DAYS apart in growth, the girl being the smaller baby- which makes sense to me. As of last week they are now 2 WEEKS apart, the girl still being the smaller one. Does this sound like it is going to be a problem for her when she is born? As of my last appointment, the boy was 2 lb 13oz and the girl was 2 lb 6 oz. I understand that at 29 weeks gestation, they should be around 2 and a half pounds (give or take obviously). She is CONSTANTLY moving and kicking and fluttering around and the boy is just chillin', and I feel him every so often but strongly when I do. The OB says they both look fantastic. I am just a bit on the curious side if this sounds like something anyone has seen in their pregnancy?

 

Hi -
I am pregnant with di/di boys and while my doc never told me in weeks, on the scale they are almost 50% apart in growth. Both are doing really well, I feel them all the time (one of them active, the other lazy, like yours ) - both the peri and my ob are happy and say that since they are di/di, there's nothing to worry about...
Rachel

 

Sounds completely normal! At 29wks I think mine weighed around 2 pounds 10oz, DS was always a few ounces bigger than DD.
At birth he ended up 1/2 pound bigger than she was. Now at 10.5 months hes 4 pounds heavier and both are happy and healthy as can be!

 

At our routine 28 week scan the hospital decided that one of my twins is falling below the average weight for gestation. I since have had further scans inc a specialist scan to determine if the baby is abnormal in some way, which they think is unlikely but they still don't know why he/she isn't growing as well as the other baby.

At 12 & 21 weeks both babies were very similarly sized. Then the slow down in twin 1s growth became apparent at 28 weeks. The blood flow to the placenta was checked (they have their own sacs & placentas) and this seemed fine. Nothing was apparent to why twin 1 had slowed growth. My last scan was on the 5th January and the weights were estimated at 2 pounds and 4 ounces (twin 1) and 3 pounds and 9 ounces (twin 2). As you can see, this is quite a difference, but I was 30 weeks then and maybe twin 2 was very large for gestation anyway? Not sure. But in any case they think 2lbs and 4oz was still too small for 30 weeks for any baby so I am having continued monitoring, and my next scan is this Thursday. Then they want to scan every 2 weeks unless twin 1 stops growing and they will decide to deliver early.

It sounds like you doctors are happy with your twins progress so unless they start to increase scans to check growth like mine have then you should be fine.

Good luck and try not to worry

 

We are having growth probs. 2 weeks ago A was 2lb 10 oz B was 3lb 3 oz. We see a Peri monthly, he said all is fine as long as the both keep growing at their own rates. Yesterday A was only 2 lb 14oz and B is 4lb 7oz. We go to the Peri tomorrow, might have to have them next week.

 

There was always a growth difference in my boy/girl twins. My son was always bigger. I dont think it was ever determined by a time frame like He's growing 2 wks ahead or whatever, but from the time they started doing measurements and weights my son was always bigger. When they were born, he was 5.5 and my daugther was 4.1 (at 36wks, I had a scheduled Csection b/c they said DD wasnt thriving in utero, and we could do more for her in the real world)

I hope everything goes well for you.

 

My di/di twins always measured within a day or two of one another until fairly late into my pregnancy where we started seeing a growth discordancy. My doctor told me she wouldn't be concerned about it as long as they were both continuing to gain weight and were less than 20 or 25% apart in growth. When they were born at 37w0d there was 1lb 2oz difference between them, but they were both healthy and came home with us 2 days later and absolutely no time in the NICU. At 10 months there is now a 3lbs difference in weight. They have totally different body builds and look absolutely nothing alike - they are just two different individuals.

Also keep in mind that ultrasounds aren't precise either. They can be off as much as a whole pound or more. My peri also said it gets progressively harder to measure them with two of them in there with body parts all over the place (unlike one where they can get the measurement just right by moving the wand around). And as they drop lower into the birth canal if they are head down it becomes harder and harder to measure their heads which is one of the main measurements that determine overall weight and growth. So don't be surprised at your next ultrasound if they aren't back to measuring close together, too!

Unless your doctor is worried, try not to worry! I know, easier said than done.

 

My girls were almost 2 1/2 pounds apart at birth. Now (at 3yo) they're 10 lbs and 4 inches different in size. One is tiny and the other isn't. Sabrina had some eating issues in the beginning, and she didn't really grow for the last month of gestation. She had some developmental delays, and has some vision issues (wears glasses, but it doesn't fully correct her issues). But now she's healthy, doing what normal 3yos should and generally less likely to get sick than Sydney. She also spoke earlier and potty trained easier. They're just very different little girls. Unless your OB is concerned, I really wouldn't stress about it. That doesn't sounds like that big of a deal, for size difference, especially with fraternal twins. Many single babies from the same parents vary greatly in size at birth. Fraternal twins are basically just like that, just born at the same time.