After 5 years of a totally sporadic period, I decided to go back on the pill. My OBGYN prescribed Yasmin. I started taking it in March of 06 and stopped taking it October of 06. In that time, I was miserable. I started having migraines on a weekly basis, my joints hurt, but worst of all was the leg cramps. I had such bad Charlie horses, I was ready to cry pretty much all the time. I would wake up numerous times a night with them. My muscles were so sore that some days I could barely walk. I was constantly limping. One night I discovered a large lump on the inside of my calf by my knee. I thought it was a blood clot and had to go for an MRI. The doctors couldn't tell me what the lump was. As soon as I found the lump I stopped taking Yasmin and within a week my headaches and the Charlie horses went away. I still have the lump, but it is slowly going away.