Question about an OB appt

Is it normal for your OB after the 8 week appt, or your first ultrasound to confirm the pregnancy for them to just use the fetal heart doppler to check the progress of the baby as the month visits go by? Or could it be possible that they provide you with ultrasounds all the way up through your delivery date at every appt?

I tried telling my friend that it’s normal for them to just use the doppler, normally they don’t do ultrasounds every appt. She claimed that with previous child she was giving an ultrasound all throughout her pregnancy until delivery date because she was high risk. If any of you have encountered this please share your opinions. I just want to know if that’s normal and if an OB would truly do ultrasounds all the way up to delivery.