Im 16 weeks pregnant and getting my 1st OBGYN visit, what do should I expect on my 1st visit?
Will I get to find out the gender?

You won't find out the gender until you have the proper Ultrasound for that. You'll find that out with the appointment. What you should expect is a lot of questions, with a side of inspection of the uterus and fetus. Probably get put on some pills and get Ultrasounds.