abnormal uterine bleeding
"I have PCOS and fibroids.  Had a tubal ligation during caesearean with third child 7/21/09 which lead to 10 weeks of bleeding and spotting.  Had d&c in December 2010 then mirena inserted for treatment of heavy menstrual flow.  Of course my periods go heavier, not lighter, but somewhat predictable with help of period tracker app.  Once my period hit day 47 in Oct 2012 I had it removed and my period started that day. 

Since I had the mirena removed my periods have become normal"