Multiple ultrasounds

Hope

How many ultrasounds are required in a normal pregnancy?

I switched ob’s and the last one I had wanted to do an ultrasound every 4 weeks. I’m 26 and was told I’m low risk.

I haven’t met my new ob so I’m not sure how often she will want one done. I know the ultrasound is $254 each time until I meet my deductible. I’ve had an 8 weeks, 12 weeks, (would’ve been 16 weeks before I switched) and anatomy scan so far.