I am currently on the pill. I had unprotected sex 11 days ago but the guy did not ejaculate inside of me. I got my withdrawal bleed on time, this week Wednesday. It was heavy for three days then stopped. Then it started up again a day later but it was very light a spotty. I take my pills pretty regularly, but I did switch the time I was taking them mid way through the cycle. Is there a chance I could be pregnant? If so, when should I a home pregnancy test?