the chance is HIGHLY unlikely... and as for your medication NOOOO, that does not mean at all that it helps to prevent pregnancy, it means that if you become pregnant it can harm the baby, so do not take it if u plan on getting pregnant while on it... and just a recomendation... get on some birth control, actually u can get it from your dermatologist, because it helps clear up skin, i was on the pill when i was 12 becuase of horrible acne.. and it worked wonders... plus if your goin to be sexually active, like u had, its very very easily to fall into temptation and have the "oops moment" and have sex.. so the pill would be a wise choice!

ok thanks..plus i forgot to mention that i am a virgin...but i read that my hymen might be broken because i am very athletic and can do the splits and stretching...nyways thanks a lot!