I first got my Mirena IUD when I was 13-14 for hormonal-induced migraines. The insertion was very painful, but the cramping did not last too long after insertion. I had mild spotting for a few months, then my period stopped completely for 5 years. Last year, my period came back and has been irregular since. Overall, my period has been much lighter and my PMS symptoms and menstruation symptoms have been minimal. I also have noticed more stability in my mood and have had decreased migraines since starting my IUD.