Next visit?

Dev 🍃 • Momma to a beautiful toddler, expecting a little handsome little boy in December 💙👶🏼 | taken 💞💞
So I went a couple weeks ago for my visit at the doctor and I was 21 weeks and found out we are expecting a babyboy, they did his ultrasound obviously and his heartbeat the day before which everything is fine & perfectly healthy! Thankfully, but now we go back the 13th of September does anyone really know what I'll be doing now? I can't remember what they do at visits..