How many prenatal appts/ultrasounds?

started my ultrasounds at 11 weeks and got pictures... Had ultrasound every 4 weeks with my prenatal appointments and got pix everytime..... Until week 29 I started having my appointments every 2 weeks and still getting ultrasounds and pix.... And my dr said at 36 weeks I'll have appointments every week and I'm sure I'll get ultrasounds and piz too