i'm on birth control (the ring). it's been almost 2.5 weeks since i started it so i know i'm protected by now, but i just had sex and he finished in me and i'm a little paranoid. should i take a plan b? i know it's way too many hornones but i'm paranoid :/ it happened in the heat of the moment and i don't usually do it - i know it's dumb! i'm 100% aware of the risks. please help :/