I had unprotected sex after my peroid ends on 26 nov and i took pill on 27 nov and on 3rd of dec i got heavy bleeding with less cramps?

Morning after pill: The "morning after" pill is actually the same as one of the active pills in oral bcp's, and has both estrogen and a progestin contained. about six days later, bleeding will occur, and generally w/o cramps. This is because of the drop in estrogen by not taking another pill after the one on the 27th. If your true period is delayed, get a serum HCH test to be certain of pregnancy.