I know these things are annoying but I'm worried ! I'm 18 and sexually active using no birth control. Around the time I was ovulating we had sex with no condom ... (About a week and a half ago) And he pulled out before he .. Ya know ! That was the first time we had sex that day but I've been having cramps since then and I'm not sure why? Not really any other symptoms .. And I'm not supposed to get my period for another week or so .. Could I be pregnant?