So, I'm 19. 5'5 and 160 pounds. I know that it doesn't seem to bad, but I stayed at 140 for almost 2 years. I eat healthy, and I work out at least 3 times a week. None of my clothes fit and I'm gonna go broke trying to buy clothes that fit. My doctor and I are at a loss because of how much weight I've gained in such a short time ( 21lbs in about 7-9 months). We just don't understand why this happening. It's starting to get outta my control. Any suggestions ?