have never had my belly measured here - u/s is a much more accurate indicator of weight gain/ size in any case, if that's what you are after. still not 100% accurate though of course.
Mine hasn't. I think it depends on the Dr. I am assuming that if you would like them to, they can do it.
She doesn't use the ultrasound each visit either, but just checks the baby by talking to me and by feeling her on the outside. She usually also uses the Doppler to listen to the heartbeat.