Hi! I had my first u/s today (6w3d) and found out at the moment we have triplets 
My RE said 2 of the sacs are small and 1 of them is measuring right on target. All 3 sacs had a heartbeat in it. He said he doesn't think the smaller 2 will make it, but he's having me come back on Wednesday to check on my progress...
Has anyone with multiples experienced the other sacs measuring small? What happened?
At this point I'd be happy with anything, but just curious to see what others' experiences were...