Saturday night my boyfriend and I were having sex without a condom. I know. I should always use a back up just in case. We had sex twice and he pulled out twice but during our second time my ring fell out. It was maybe out ten minutes so I know I should be okay. I started the ring 12 days ago on the 5th day of my period. I'm a very paranoid person and was wondering if I should purchase plan b to be safe. Is there any chance of me being pregnant?