Birth control

I'm 16 very active in school and extra corricular activities so I can go the best college to become a veterinarian and after maybe join the Army. Me and my boyfriend just lost our virginities to each other this week, and I don't want to end up pregnant anytime soon so what birth control do you guys think I should take? I'm afraid of shots so that's out lol. But other than that I'm willing to listen to anyone who can help me pick one out and talk to my gyno about it when I go soon.