Two ultrasounds the whole pregnancy?

Is it normal to not get another ultrasound after the anatomy scan? I had my anatomy scan done at 19-5 weeks, I'm now 33-2 and havent had another scan. Ive been in an out of l&d due to complications, i am on bed rest because of everything. Also have not had a check up on if i still have previa or not. I was diagnosed with it and they told me i would need to have it checked again. I'm kind of feeling like my doctor isn't doing everything he should be? Shouldn't there be at least an ultrasound to check her growth before i give birth?