I was on NUVARING for 4 months after being on Yasmin for almost 2 years. It was the worst mistake my doctor ever made. I had SEVERE bowel problems, to the point where i had to have a Colonoscopy and other various invasive tests. My cramps were horrible, and non-stop throughout my cycle. I was ALWAYS tired and never wanted to do anything. I gained 5 pounds in 3 months, after trying to conquer anorexia/bulimia (I was a normal weight at that point). Because of the NUVARING, I relapsed. I went back on Yasmin, and within one cycle, I was back to my normal, healthy weight I was after beating anorexia/bulimia and before using the NUVARING. I would not recommend this to ANYONE