At what age?

Aaliyah
I'm 18 years old and I haven't went to the gynecologist yet. Should I start going to the gynecologist now. I haven't had sex yet I mean I have done anal and tried to actually have sex but it didn't happen. I'm pretty sure I don't have anything because I have blood and I know they do all of the std tests on it plus I know they have already used my blood because I'm getting calls asking to give more blood. Also what age did you girls start to go to the gynecologist?