on the night of 11/29/12 my boyfriend and I had sex and the condom broke and he came inside me, both of us freaked out and 2 hours later he got me the "Next Choice" emergency contraceptive which is like "plan-b". So I took the pill 2 hours after sex, today would be 6 days after intercourse and I am getting spotting I believe? Its small amounts of blood but my period shouldn't come until a month from now because my last menstrual cycle was the night before we had sex which was 11/28/12, i haven't felt any symptoms of any kind other than I woke up today with cramps and checked and there was blood on my underwear, should i be worried??? thank you for your time