Recently I have been having a stomach ache, almost like cramps. I am 20 years old, a healthy man, I have recently put on a lot of weight and over the holidays I drank a lot of alcohol. The stomach ache and cramps won't go away. I wake up to it and go to bed with it, I have been having regular bowel movements and just been tired. Does anybody have any idea what this could be, I am scared it could be something really bad..