Okay I'm 17 years old and I'm so skinny I'm just 100 pounds and I haven't gained any weight for a couple of years and I want to gain weight but it never works... like every time I eat a lot I never gain weight and I just get so tired of eating and eating till I'm full to the point where I want to vomit and tired of shoving food in my mouth. My metabilisiom is really high because if I'm really full 20 minutes later Ill be hungry and in need of food again.. What should I do? Sometimes I get so depressed and I think things I shouldn't be thinking.. its hard when I see other girls out there with nice curves while I'm here with nothing... I don't even want to leave my house sometimes.. Please help.