Changes to periods with mirena? – I’ve had my mirena in for 2 years, since I’ve had it my periods have gotten worse. They have gone from 4-5 days long to 7-8 days long. It is now painful and so heavy. I get horrible acne now, breast pain, horrible cramps and headaches. Has anyone else experienced these changes? I’ve spoken to my doc but she doesn’t seem to be concerned. I considering getting it removed but maybe it will get better?