Hi i started taking cerazette last feb 28, 2011, that is the 4rth day of my cycle, i had sex with condom last march 3, 2011, but my partner stayed inside me until it was flaccid, is it possible to get pregnant? im afraid that semen would slip inside me knowing his penis is already flacid. and also, i took cerazette day 4 of my cycle, am i already protected that fast even without other kinds of barrier method?