First OB appt

Hey y’all! So last week they had to reschedule my exam so Thursday is my first OB appt! I will be exactly 8 weeks. I already got an email letting me know my appt is at 10 and an ultrasound is scheduled at 1030 so I’m super excited and nervous at the same time. I’ve never been to this doctor before (I moved) and I was wondering if y’all knew how long the first usually lasts? My bf is coming between classes to see and was just wondering how to plan my day afterwards. Thanks a bunch!