Hi, I'm kind of worry, I have sex with my boyfriend a few weeks ago, we didn't used any protection, but he didn't ejaculate, it was just too short the time we had, then i have my normal period and I though everything was fine, then we have had sex but with protection, only once that he enter without the condom but then he take it out and put a condom. I'm kind of irregular with my period sometimes came a few days later or earlier, if there is a chance of a pregnancy??