My boyfriend and I had unprotected sex and the next morning I took Plan B but we ended up having unprotected sex once again. I did not take the pill this time. We are past the 3-5 days which I was suppose to take the pill. Now, I got my "period" 4 days before my scheduled period. I thought it was implantation but then it turned more into a period as the day went by. It's heavy Aswell. Now my question is, since we had unprotected sex, could I still get pregnant? I'm not sure how the pill even works besides it preventing pregnancy from acts that already happened.