Hi N.,
I've been using Mirena for the past 7 months, and I love it! For the past 5 months my period was a little weird. ON the 15th of every month I would spot heavy, then lighter for almost 4 days. Now, it's just like a day light spotting and that's it. But, for all the methods I've had I have always had the same problem spotting and full menstrual period. From all methods I've tried this one is from far the best one out there for me. I have used from the inyection, patches (which I loved, but cause of the recall don't want to try it), pills and the one you put kind like a small thing underneath your arm (sorry forgot the name), and everything you can think of, all were the same problem for me. Maybe other people were good, but I can only speak for myself, since my system is soooo crazy. LOL! The only thing is that after using it for 3 months I went to my OBGYN, cause I'm always afraid of getting pregnant, and she did an ultrasound and it was still there but I had an ovarian cyst, but she said it was normal for some women w/the Mirena, mine went away after a month. So, make sure you do speak w/your doctor about doing an ultrasound every so often to make sure. But, from my part I can tell you I love it! so, good luck!