I had protected sex with someone, but I was still worried so I took the morning after pill within 15 hours. After a week or so, I started my period, or something sort of like it. I have been having cramps, and I started to bleed for about 6 days, but I am still having spotting (which has been going on for 3 days after the 6 days of what I think was my period... ) What does it mean? Am I pregnant? Do I have something wrong within my uterus?