birth control
"I took this for about a year and a half. I did only have one period every 3 months, but for me it was 3 months worth of period compressed into one week of hell. One week every 3 months I could barely get to class, and when I did I was constantly going to the bathroom between classes to change pads/tampons. It also made me very emotional for about 2 of the 3 months. Overall, it did do what it promised: not becoming pregnant, and only one period every three months. However, I did not experience lighter periods."