16 week appointment

I have my 16 week appointment tomorrow morning (well technically today since it's 1am) I can't sleep because I'm too excited haha. I know it's not going to be anything too exciting but at least I'll get to hear the heartbeat. This whole going 4 weeks between appointments is weird for me. I had to go every week when I was pregnant with my son because I was high risk and had preeclampsia.