I had my period about two weeks ago and yesterday i woke up with minor cramping and spotting. it continued to today and a little heavier. what's wrong?

Abnormal: This is certainly abnormal but not terribly worriesome. Some cycles are abnormal because of hormonal changes or abnormal ovulation. I would simply begin keeping a diary of when you are having a period, spotting, cramping for the next 1-3 months. Usually these are sporadic and uncommon events. If it persists through 3 months then it is time to see the GYN.