I took plan B on July 23rd (about 72 hours late), got my period the next weekend around July 28th and had a light period for a few days (it seemed sorter than usual). Then just recently started bleeding again around August 4th. At first it was just kind of spotty, until last night when it got much heavier. I've also been having some strange abdominal pains that seem different from cramps. Do you know what the cause could be? Is this a sign of miscarriage? Or could it be related to plan B? Thanks