DO I have an ED?

Was wondering if I have an eating disorder because I'm not sure. I count calories with My Fitness Pal and it looks like on most days I used to eat about 500-600 calories, and occasionally binge which can go up to about 1400-2000kcal. While on winter break, I'm eating anywhere up to 1000, but refuse to eat any more than that (it's usually around 760). I'm 13 and 5ft (152cm). Do I have an ED?