Ultrasound Question

How many ultrasounds does someone usually get during their pregnancy with no complication & not high risk? I've had 2 so far.. 1 at my very first apt (9 weeks) & 2nd one for the gender (at 19 weeks).

Also, are they supposed to do measurements & stuff during the anatomy scan? I only remember the lady checking FHR, taking pics & looking for gender. It was very quick, i feel like my ultrasounds is always kind of rushed.