I'm an 18 year old girl and recently I've been so hungry constantly but when I begin to eat I'm full within a few bites and half an hour later I feel as if I'm ready for a full meal but again, I can't even eat half of it. I don't eat a lot of junk food and I eat foods with a high amount of carbohydrates e.g pasta. I've also had really bad diarrhoea and my stomach has been making crazy strange noises. Does anyone know what this is??