Hey, i'm a 17 year old male, a tad too skinny, 122 pounds. I lost around 30 pounds over the past year. Over the summer, my face was quite slim and thin and tight-skinned. But, although I havent gained any weight, in recent weeks my face has become loose-skinned, a little flabby, my cheeks have become a little bigger, my jaw and cheekbones less defined...I dont udnerstand. What is this, and how can I return to the thin face version?