What happens at my 2nd Prenatal visit at 15 weeks?

Hey all! I am 15 weeks pregnant and have my 2nd prenatal visit tomorrow. My 1st appointment I got my blood pressure taken, weight, pee test, blood drawn, pap and ultrasound. I think my doctor said there wouldn't be another ultrasound till week 20 to find out the gender. I am just wondering what they will do at this appointment? I really hope I'll get to hear the heartbeat at least...do they usually do that? Is going to be mostly just talking about stuff? If anyone knows please share! :) I Had my first appointment at 12 weeks. Thanks!