abnormal uterine bleeding
"I got mirena inserted on Dec. 8th, 2014. At my 6 week postpartum checkup. 
I started bleeding immediately and consistently until March 23rd.(and I mean every single day for over 3 months) 
As of today, I still have a period every single month, it hasn't gotten any lighter at all. My pms is worse. I get bad acne, which was never a problem before.  The strings make my boyfriend uncomfortable during intercourse (after having them shortened TWICE already). Heavy spotting in between periods, cramps all month long. 
My Dr. Assures me that it will get better, and they don't want me to have it removed. But honestly, I feel worse off now than when I got it."