Am I pregnant

Me and my boyfriend have unprotected sex quite often and on the last day of my last cycle he came in me and then twice durning the time I was ovulating. Should I just wait it out and see? I’ve told him and he said he has a feeling I am cause he “knows” himself and recently I’ve been having serious stomach cramps, nauseous, super tired all the time could this be because I’m starting my period or because I’m pregnant?? I’m bleeding a little not enough to fill up a tampon but enough that it doesn’t look like implantation bleeding.. please help I dunno what to do