im 16, I had sex on the 22 of December, and the 23 I took the pill within 25 hour maybe so. I didn't vomit nor anything, a week and day later I started having cramps and started bleeding, it was lighter than usual, I bleed for 6 days straight and it ended before the normal time I would start my period which was the 7 of January. It's been 3 weeks and I nervous, my boyfriend said he didn't cum inside of me but I don't know, I didn't have a good feeling about it. I don't know if that was my period or not. PLEAS E HELP ASAP