This is a something felt very strongly in ‘The Natural Way to Better Babies’ book as they believed it wasn’t necessary. I decided I didn’t want u/s with Amy after reading the book but DH did so we ended up having 4 @ 9 (checking for twins bc of large belly), 12 (routine), 20 (routine and found out sex) & 36 weeks (ob wanted to check position). I wanted to check for Downs and other things and I know that the u/s is not conclusive. It’s a hard one and in today’s society I think it is routine for most. It hasn’t affected Amy as far as we know as she is perfect. I still wonder what effects it can have especially when my belly was really warm after one u/s. So I will continue to sit on the fence with this one.