So Im about to be 18weeks according to my edd My first appt is tomorrow will i get an ultrasound?

im sure my due date is off by a couple of weeks so i think im more so 16weeks but ill leave it to my doc to see. Also im still waiting on my medi-cal to be approved, so would they still be willing to give me an ultrasound because im so far along n my belly is growing pretty big by now