Mirena
birth control
"The insertion was easy. I experienced mild cramping.  I took two ibuprofen before I went in, maybe that helped. Off and on that first week,  i took ibuprofen for the cramping. 

I had it inserted about 1 month ago and since then I've had a light flow. Three days ago,  I got my period. It's not heavier than in the past but it's definitely a period. I've read that for most women the bleeding stops within 30 days. For some it takes longer. If you decide to use this birth control,  be prepared to wait it out."