I gained 50 lbs in less than a year for no reason. I continued to eat very healthy, 1500 a day, and exercise 7 days a week for 1 and a half hours. I do cardio and weights. Two years ago when I followed this same eating and exercise plan, I lost weight but very slowly. I went to numerous doctors about this and finally my gyn said I had PCOS. I have had every blood test done that I can think of and still nothing ever came back. The only symptoms I had were no cycles and weight gain. I've never had normal cycles but they completely stopped when I started excercising a lot. I wanted to know if this sounds like PCOS. I know I could still have it with no symptoms but I think this weight gain is quite excessive for no reason. My doctor put me on Metformin three months ago and I dropped my calories down to about 800 a day, while still excrecising the same. I've lost about 15 lbs but I think its from the reduced calories. I wanted to know if anyone else has ever gained this much weight or if you know of anything else I could so. I cant go through my life only eating 800 calories a day forever, but it seems to be the only thing that works. Please help!! I am 24 years old.