My scan (to check for placental function but the technician did a measurement anyway) said DD was 7lbs14. She was 7lbs14.5 BUT that means she only gained 0.5oz in the 6 days between the scan and her birth when I put on 1.5kg!!! It is seriously a load of crap. When they get it right it was luck, pure and simple - it's like guessing how many sweeties in the big jar, even if you got good enough to be right within a tolerance of 50 either side of the true number, you wouldn't stake your life on it, let alone someone else's!

Bx