I came to this web in hopes to see if the Mirena has ever caused kidney or bladder issues...which I guess it's not fair to say that the Mirena or being pregnant caused my stones since I've had UTI problems most of my life. Yet, reading over your stories I really feel sorry for all the women having problems...I have to admit that since getting my Mirena in about 18mths ago I've had no real problems. Sure at first there was cramping and on and off bleeding for the first month or so, but over-all I love it. I've had no sex-drive problems, weight gain, or abnormal depression...that's saying a lot b/c I'm Bi-polar and haven't taken meds for it in over 7yrs. Now I do have cramps sometimes and never actually start my period, but I'd take that any day over the sever cramps I used to have. Also I was plagued by ovarian cysts, but surprising enough I've had no problems since having it put in...which was a concern for me since it has been known to cause them. I don't know what really to say but just as with any new meds, etc., look into it before you jump in. I had MORE problems with your standard BC pill then with the Mirena.