Gyno?

Me and my mom aren't really close eneough to talk about stuff like this so I'll ask on here. I'm 15. What's my situation with the gynocologist. When should I go for the fist time (I'm not sexually active and don't plan on being until I'm married) What will the first appointment look like? What will the second appointment look like? Does my mom have to be in the room? What if the gynocologist is a man? What if I'm on my period?