"i got my mirena in august of 2015, so it&#039;s been 7 months since insertion (at this point in time). i wanted it primarily for birth control, and also to help curb my obnoxious periods- used to have to change out a diva cup every 4-5 hours on the heavy days. insertion did hurt, but ibuprofen helps. the first 6 periods after insertion hurt, but deep breathing, ibuprofen, and some tlc helped a lot. periods have gotten *significantly* lighter, to the point where i can leave my lunette menstrual cup in for 12 hours and it&#039;s not even half way full. definitely recommend mirena if you have heavy periods, but patience is key. plus you can&#039;t beat the 99.8-99.9% effectiveness rate in preventing pregnancy."