Okay, I'm a female and fifteen years old. I've been dating my boyfriend for 11 and 1/2 months now. We've had plenty of sexual contact without actually having sex (oral, fingering, dry humping, etc.). I am very paranoid about getting pregnant. I DON'T WANT TO! I'm very paranoid about his semen getting anywhere near my vagina. We tend to oral each other quite frequently, but I always make him go down on me first if we do. I want to be able to go down on him first, but there's one concern I have. If I went down on him, (orally, by the way), and he came into my mouth and I swallowed, then we made out, and then he went down on me, would it be possible for some of the semen to still be in my mouth after swallowing, then after making out some of the semen from my mouth gets into his, then when he goes down on me, the semen from his mouth finds its way into my vagina and gets me pregnant? I know I sound really paranoid but this is something I'm dying to know.