Hi.. I have a question reguarding sex and my birth control. Last night, my boyfriend and I had sex around 4AM. I am on the pill, and just took my last pill from my pack at 10PM (so I'll now be taking the 7 sugar pills.) We used a condom, but it kept sliding down from the base of his penis to just above the middle of his penis, but he kept pulling it back up. Is there a possibility I could be pregnant?