well i dont know about having them before hand or not but i do know that after having this damn thing put in i developed the cysts, they seemed to go "away" as the dr. liked to say, but ive been in major pain over the period of the last month and went in 2 days ago for the CT scan... only to find out now that i have 2 cysts on my kidneys and now have to go in for my first ever surgery to have them removed, i hate this damn mirena thing, between this and the excsessive amount of bleeding and clotting, and pains that make me wish i was going through another 48 hours of hard labor, the mood swings ,weight gain, severe migranes, acne, and loosing my hair by the clumps, well i am sick of it all, if u need someone to talk too feel free to e-mail me my address is sweetascandijust4u@yahoo.com my name is sandi ... i look forward to talking to someone who is going through the same things as i am ... in a way it feels better knowing that someone wont tell me it's all in my head ya know?