abnormal uterine bleeding
"I'm 46 years old, on my second Mirena and will be eagerly lining up to have my third fitted next year. During my mid 30's I began to experience heavy periods to the point they were interfering with my ability to leave the house. My doctor recommended Mirena. It took many months to settle down (4-6 if memory serves) and I was at the point where I wanted it out but my doctor told me to wait another month and sure enough the daily spotting stopped. 

Mirena has worked wonders for me. I love the freedom and convenience of not having periods."