two weeks ago i got my period which lasted 6 days. me and my boyfriend had unprotected sex on the 6 of nevember my period came on on the 11-16 of november. me and my boyfriend had nprotected sex again on the 20th. i started taking my birth control pills on the 16, 17, 18, and 19. i forgot to take it on the 20 which is wen me and my boyfriend had sex. i started experiencing vaginal bleeding on the 26,27,28, and im still bleeding today. i have had bad stomach cramps and a slight headache. i dont suppose to get my period until 2 more weekd from now. what could this be??