How often should a mom to be have a ultrasound done? I haven't had one in 9 weeks with my doctor and last time I was in she was confused on why I didn't have down to have one that day and I thought I was suppose to have one to and I called my nurse two days ago and still no call back but I asked if I was ganna have one when I come in two weeks so than my husband could at least see are baby move on the thing since he never with when I have my appts due to his job but I was 13 weeks when I had my last appt when I was able to see my baby and I'll be 23 weeks when my appt comes