A week before my 20th birthday I started feeling the urge to eat more than usual. And.3 days after my birthday I would eat but no matter how much I eat, I eat water melon pieces, eggs, drink orange juice and plenty water. But 5 min after eating I feel like im starving and every minute it gets more painful feeling, ive gained a few pounds in the beginning week wich is unusual and now I feel always tired, hungry, dizzy. Whats wrong with me?