This is one bad story so don't be scared off but.....I had a very nasty experience with the Mirena. From the time it was put in I was suicidal and severely, dangerously mixed. It also didn't work quite as planned; I had 2 weeks of bleeding, 2 weeks off, 2 weeks of bleeding so I was still bleeding too much and getting anemic.

We tried everything with meds and IP and nothing worked. So after 9 months we pulled it thinking "can't hurt, might help". I was at a big teaching hospital and my pdoc and gyn had never had anyone with a bad reaction but we were out of ideas. It came out and within days I was improving. Within the next couple months my gyn and my pdoc each found another case of a woman with a mood disorder made much worse by the Mirena and both of them improved immediately when it was removed. After that they've been more cautious with it and women with mood disorders.

I would never say don't try it because it is great for a lot of people but I would say to use caution if your bipolar changes after insertion. The good thing is that if it does cause problems it is easy to remove. And it is such a low dose of hormones it shouldn't matter; I am extremely sensitive to meds and hormonal changes.