when does the doctor check u

Abby
I'm 36 weeks tomorrow and I went to my doctors yesterday the ultrasound tech said my baby is really low and head down I've been losing parts of my plug (at least I think) it's really heavy creamy discharge I have no infection going on either but my question is I have yet to be check by my doctor is that normal ? I thought ur supposed to get checked every time u go in after a certain point in pregnancy