I had an u/s last Friday (Nov 28) at 6w3d. We saw two yolk sacs and one baby (with a HB) on a rather low tech u/s machine. Since then my m/s has gotten unbearable and I am starting on meds (25mg B6 3x per day and 1/2 Unisom tab at night) and I just had another u/s scheduled as the doctor thinks that 2nd yolk sac might be another baby. Does this happen? I am beyond nervous and a tiny bit excited. Thought you ladies might have some insight. Thanks!