need help

Hannah
My boyfriend and I decided to maybe try for a baby after I had started the pill for 2 days. So I had been off of my period for 2 days at this time. I decided to stop taking the pill because we were trying... we had sex for 6 days straight and it was great until I started bleeding 8 DAYS AFTER MY PERIOD ENDED. I just am looking for some input. First I have no idea why I would be bleeding. Second is it a thing to bleed heavily after he finishes inside of me. And third is it possible that I could be pregnant even though I am bleeding?