abnormal uterine bleeding
"I had Mirena inserted two weeks ago as a treatment for endometrial hyperplasia.  I am 40 years old and never had a child.  After reading about the painful insertions online, I was nervous about insertion.  I took Tylenol an hour before my appointment and tried to relax during insertion.  I had only mild cramping during the insertion.  The nurse practitioner had me cough when she inserted the tube into my cervix, which I think helped lessen the pain.  In fact, when she told me she was done, I was surprised.  I was near the end of my period the day I had it inserted.  I bled for the next two days, and have been fine since except for some mild spotting today."