I have had Mirena for 7 months with no side effects yet. However last month and again this month at the same time, I broke out in a pimply rash on my chest and neck and now a little on my face. I am thinking it is related to Mirena. I called and dr. and they said no- it would have happened sooner. I feel it is hormonal since my breasts are also sore and I only got a slight period last month. What do you think?