Mirena
"Soon to be 51 and had the mirena inserted 7 years ago for endometrial hyperplasia. My Dr (whom I love) said it would likely make my periods stop (hurray) and would protect my uterus. 
Well it DID NOT make my periods stop - and it took well over two years for me to start feeling "normal". I have had pH issues and flares of Bacterial Vaginosis ever since.  I've tried everything on the market for it only to be told by my Dr to "use Luvena" every time I brought it up during my annual. Anyway, I stuck it out the entire seven years and am due to have it removed in a few weeks. I honestly cannot wait. I've always been very sensitive to progesterone- too much makes me feel like a depressed lead balloon."