Hi there, with DS2 I had quite a few u/s to check him, as I had gestational diabetes and they needed to monitor his size. Ends up I also had low amniotic fluid so had more u/s for this. They are really no risk. So in the end I reckon I had about 6. I would say they are necessary if you have an underlying condition that requires monitoring, better that than not monitor and have something bad happen. Good luck!!

shampagne