I've had a Mirena fitted 3 weeks ago during a lap. It was to control heavy periods but I have never felt so low, unmotivated, unable to concentrate, dizzy - frankly feeling on another planet. I'm not normally decisive but I've decided it's coming out on Thursday since the consultant told me it doesn't necessarily stem the endo. I'd much rather suffer the painful period that this constant drugged up state. Any one have any similar response. Most of my friends who have it swear by it and say it's radically improved their lives!