I been haveing irruguler periods all this month of april 2012.. one day it would last 3 hours and stop. week go by i start my period again and it would last one day. So what im asking is what could be wrong with my periods this month? back pains, nausa, tired, very bloated and haveing pink to brown discharge . Im 5 7, 125lbs, and im 28. i got my tubes tied in 2007.