I have had the mirena for 9 months now and I've been having periods every month but they last for 2-4 weeks at a time I will be off for a day or two than its back again. I contacted my OB she tells me it's normal she checked to see if it was in place and an ultrasound showed it was. She informed me that this will do this for 6 months to a year that doesn't sounds right to me I need some advise I'm confused on what to do at this time. SOMEBODY ANYBODY HELP ME!!!