I'll make a long story short. Me and my boyfriend have done a bit of genital rubbing without protection at one point, and i took plan B asap (13 hours after). I got my period a week after that, and it was very heavy and lasted about four days. Me and him have done the whole genital rubbing thing ever since, but with the use of a condom (he never ejaculates while im on him), and we are extremely careful with it. I have not gotten my period for about 5 weeks, but I am also very irregular. Is there a chance of me getting pregnant this way?