Hi i am 20 My due date was 20 August,2016 and i got intimated on 17 august,2016 as a precaution i took i pill two days after i.e 19 augus,2016 .after 5 days on 24 august,2016 there was light bleeding with some shedding like of menurstion.which lasted for 4 days. I even took urine hpt on 14 September,16 which was negative.. its today 22 september 2016 . I haven t got my period.. please tell me why are this late or is it due to i pill?