I had unprotected sex early Sunday morning, my period is supposed to be due this Friday. I started spotting Sunday night and it's still going on today (Monday) just a little heavier. Should I be concerned about pregnancy? I can't see it already being implantation bleeding considering how soon it started, just a little nervous. Also the sex was a little rougher than usual so I don't know if that would cause the spotting to happen. And would I still get my period on time if I'm already bleeding from now? Also I am on the pill, I am not that great at taking it at the same time every day though. Considering plan B just in case? Opinions? Thanks!