How many sonograms?


So I went for my first appointment and had my first sonogram. Measured 7w5d. Baby had great heartbeat and could even see the little beans heart beating! When asking my doctor when my next ultrasound would be, he said at 22 weeks. Is that normal?!? Like how am I supposed to go 15-16 more weeks without seeing my baby grow? Iā€™m going to go insane.. šŸ¤¦šŸ»ā€ā™€ļø