"i tried the mirena for 1 year. the inserting was not painful for me at all but the next day i had level 10 pain and was concerned but all was fine. it ended up completely stopping my periods which was the only thing i loved about it. about 6 months into it sex started to hurt really bad with it and i was also starting to have really bad black out spells. i actually ended up seeing a heart specialist because they thought it was something to do with my heart. i told the specialist i think its my mirena.  i would have the mirena checked on a reg basis by my gyn due to pain and such. one day i ended up getting so fed up with it all i told my gyn to take it out. since then i have had no issues with blacking out even and sex became non painful."