I took a test to see if I am in pre menopause and it came back positive. I am 41 and had the mirena in since DEC. 2004 and had it taken out Sept. 2008. Now I have elevated thyroid, pre menopause and a heart murmur on top of vertigo, weight gain, extreme migraines. That F***ING thing has screwed up my body. Thanks for letting me vent cause so many people don't understand.