How often do you get an ultrasound?

Rina 💕 • Mama of 2. TTC for baby #3 ✨
How often do you get an ultrasound at appointments? 
Ive had 4 Appts so far and got to see the baby each time. I just switched drs and went in for my 19 week Appt and she told me I won't get another ultrasound. I was so shocked to hear that I just started crying..  I thought you get an ultrasound at every Appt?! 
Is this normal?