did your twins measure differently early on?

alli&pat

yesterday i went for an early u/s to be sure that baby was progressing well.  boy, did we get the surprise of a lifetime...

baby A looked great, measuring perfectly and we saw the little heartbeat flicking away...then she found another sac!  it was just a yolk sac with no developed embryo like baby A.  u/s technician said that she has seen twins measure differently and still turn out fine...and she thought that a nicely developed yolk sac was promising that baby B would keep developing.  i go see the doc on wednesday (yesterday was u/s only appt). 

did anyone else have an experience like this?  i forgot to ask how far along baby B measured if it was just a sac.  any info would be great...

Mrs. Destructo

I had my first ultrasound at 6-ish weeks, and my doctor didn't even see a 2nd sac! We had the surprise of a lifetime at our 9w ultrasound when we saw 2 little gummy bears dancing around.

So yeah, it is entirely possible that your 2nd baby will catch up in the next few days

FaeryStarGazer

Yup! When I had my first US they only saw one sac- nothing even in it, so we were thinking MC was on the way. I ended up in the ER 2 weeks later, still pregnant and now with two. Two big heartbeats...

They always measured three days off. Molly was due Sept 1st and Lilly was due Sept 3rd I always thought our US tech was screwing with us when she said that! I had two perfect girls at 37w1d/ Aug.13.

Rose.9.6.03

I had an u/s at 6w5d.  Baby A was measuring 6w3d and Baby B was measuring 6w0d.  The RE was worried about Baby B b/c she was nearly a week behind her gestational age.  Thankfully, by our next u/s at 8w4d, both babies measured perfectly. 

 I found out it's pretty common for one multiple to measure behind a bit.  Hang in there and best of luck!

AlpacaBunny

Our babies have measured a few days apart from each other.  AT the first u/s they were both measuring ahead of my EDD then at the 2nd u/s they were both behind the EDD.  I know one nestie, Jen&Andy had her first u/s and saw 1 hb and when they had their 2nd u/s there were 2 hb's.  So I think there is a good chance baby B will catch up!

MelZull

At my first appt my dr did an ultrasound just to check things out and I was measuring just over 5 weeks along. There was only one sac. I didnt find out twins until I was almost 16 weeks when we had another ultrasound. Both my girls are still measuring differently, but both are also very healthy and kicking fools right now. Good luck!

avjrjn

baby A always measured bigger, by a couple of oz then at 36w i had an us and there was almost a 2lb difference.

Baby A was 5 lbs 10 oz and Baby B was 7 lb 4 oz. they moved up delivery to 37 w and everyone was perfectly healthy.

mrskimmieD

My babies have been consistently measuring 2 days apart throughout the whole pregnancy.  Baby A is always measuring to the day and Baby B is always 2 days behind her.  I wouldn't stress over it yet because so much changes every week in pregnancy.