Last 4th I've had sex with protection, the condom didnt broke up but I was afraid, so 15 hours later I took the plan b. A week after I bleed for 3-4 days and I was expecting my period on December 25 but it didnt came. When I have sex I was on my 8 day of the cycle, meaning I wasn't that fertile. And besides, I checked the condom. Is it possible that i am pregnant?