I had mirena put in around the 2cd week of June after having my daughter in may. I have had it for a year and a half now and after one thought miscarriage in December of last year have not had anymore pregnancy problems and even though the doctor said that the evidence of a miscarriage was there still doesn't think i had one. For the last 8 months i have had bad acne, abdominal cramping, low blood sugar, back pain, weight gain, hair loss, and one doctor even mentioned fibromyalgia. The back pain is the reason the doctor thought fribro, it hasn't actually caused it but once that doctor read that i have mirena he said that it may be it. All of these things seem to be from mirena and we are planning on having it taken out soon to see if they go away.