I don't remember when my last period was, but I know it was in the first two weeks of February. My fiance and i had sex Feb 16th. I don't take BC anymore, but we always use a condom. The condom slipped off as he was pulling out and fell off. He didn't even push in because he felt the change and he did not ejaculate. I felt weird even after we had sex, maybe it's all in my head. Around March 3rd I had sore nipples for a day, maybe two. But now I feel like i'm going to have my period. I have clear to yellow/white discharge with mild cramping and i should be having my period. Could I be pregnant?