we did four formal ones--one at first meeting, NT, and two for anatomy ( first time baby did not cooperate very well)-- and several informal ones ( done by OB with a handheld.)
My insurance plan covered two Ultrasound for my pregnancy in 2009. That's normal. For high risk pregnancy, the insurance company will cover more, one of my co-worker had monthly ultrasound to monitor the development of the baby since some concern of health issue.
如果baby正常,你也没有什么complication的话,医生没有办法order ultra sound for you from insurance,我即使到了最后,我感觉我这个baby太大下不来,我的医生 还没有给我多要ultra sound,到了最后难产了来不及ultrasound就c了 :(