First ultrasound at 20 weeks

I’ve been going to my Primary care provider for my pregnancy and at 28 weeks I will start seeing an OB. I’m 12 weeks 1 day and yesterday we heard the heartbeat through the use of a Doppler. My PA stated I will be having my first ultrasound at my 20 week appointment to determine the gender and get a better look at the full anatomy. I was wondering if anyone else is going this route.