I have a cyst condition too, and it's the only reason I am still on pills and not an IUD. I completely sympathize/emphathize with your pain and am sorry you have to go through it too

I work at a women’s clinic where we implant Mirena (and other IUDs) and honestly we generally see one of two things: you absolutely love it and have no or minor side effects and it’s the best thing in the world ever and everyone should get one because it's life changing, or you absolutely cannot tolerate it and need…