i had my periods on the 17th of march and it was over on the 21st of march.i had unportected sex on the 21st and again on the 24th,but i took the morning after pill or Plan B on the 24th still within the specified 72 hrs. how ever there was blood this morning(30th march) very light and it increased some what on the 31st and the blood stopped on the 2nd of april. its red/dark red coloured. i usually get heave periods but the period before this bleeding occured wasnt as heavey. my question is could this blood be just a normal period even though it came 2 weeks after the perivous one. i have been under stress lately and i understand that affects them, or could this mean i am pergant