I have Endometriosis and had my Mirena IUD put in on Aug. 8th, 08. Since then I've noticed a lot of changes. I'm crabby, A LOT! I have severe mood swings. One minute I'm happy go lucky and then the next minute I could kill people. I have cramps all the time. At first I thought it was just my period, but it can't be. I don't bleed at all anymore. I spotted the first two weeks and nothing after that. Now, I just have pain all the time. Like I said I thought it was just what was suppose to be my time of the month, so everything hurt but that isn't the case. My breasts are tender, as if I were to be pregnant. I feel bloated most times. I have abdominal cramping, to the point where I can feel the outline of my ovary and uterus. My back hurts all the time. I have endometriosis and my doctor swore that this would take care of the pain related to that, but I think this just started a whole new ball game. My boyfriend swears since I got it put in, that every time we have sex he can feel something..I don't even like sex anymore. When I agree to have sex, I usually end up making him stop because I can't take the pain any more. Then afterwards I hurt for a week..I know this isn't normal. I never had any luck with the pill, and depo almost killed me. I thought this would be perfect for me, but it's not, and now till I get insurance I can't even get this taken out. I don't know of any long-term side effects to Mirena, but I don't think all of this trouble is worth it..