I agree with Open Eyes - so much of this stuff is normal for our age group. I wouldn't worry about it too much. You say you've experimented but haven't actually had sex. As long as you're not acting on the urges that could put you in danger (unprotected sex) or get you into trouble (sex with a younger person), then I personally don't see anything wrong with what you're doing. If masturbation is involved, that's fine too. Nothing wrong with learning about what pleases us and what doesn't.

Oh, by the way, I'm a 17 year old girl. Not some creepy old man sitting in his basement giving you advice on how to self-stimulate LOL. That would be weird.