I was put on Yasmin for only 3 months to treat an ovarian cyst (age 48). After just 3 WEEKS, I experienced leg cramps at night and severe constipation and bloating, despite taking Metamucil 3x a day, eating a high fiber diet with whole grains and lots of fruits and vegetables, increasing fluids, and taking an herbal laxative tea. I went off it immediately before I developed any other negative side effects.