Today I went for my Down's Syndrom screening (12w2d). On the ultrasound I saw my baby, who is doing fine so far, but baby has a huge tummy! Is this normal? The midwife/ nurse didn't mention anything about the tummy so I don't think it's like, a huge matter of concern. It's just that the baby, at 6.49cm, seems to have an awfully large tummy...