hi im pregnant with twins im 29 and alrady have two children, twins run in the family. i had scan last tuesday april 19th, they could see two yolk sacs but only one heart beat but i was told was only 6weeks gone. but my last period was in feb19. any body know what the chances are of there being two healthy babys one smaller than the other. and i do know of the vanishing twin syndrom. what would be the sighns if the other one dies, and one lives

Hi my first pregnancy was twins and thye didn't detect both heartbeats until 12 weeks although they did detct two sacs at 8 weeks. I was told at 8 weeks that one of the twins didn't have a heartbeat and wasn't viable, but this turned out to be incorrect.

My second pregnancy started as a twin pregnancy but they were 99% sure at 9 weeks that baby no 2 wasn't a viable baby. This proved to be the case and at 12 weeks baby no 1 had grown and the second sac was diminishing - this was eventually absorbed by baby no 1 so I didn't have any symptons at all. Hope this helps.

if the two sacs were of a similar size and are at your next scan then i would be asking how come the sac without a hearbeat had grown also???? You might jsut find you end up with twins!