Is it normal that I feel beautiful when I'm hungry?

I pulled an all nighter and I'm still awake at almost 12:00 PM. Last night, or this morning, I ate a bunch. I just went outside and ran for like 10 minutes. I know it's not very long, but it made me sweat. I'm lazy. Right now I feel good. I'm going to try to starve myself for the rest of the day. My friends say I have an eating disorder, but I'm friggin fat. I'm 141 pounds and 5'6. I binge and occasionally purge. I haven't for a while. It's been a few months. I starve all the time, the problem is I can't very much. When I'm hungry, I feel skinny and pretty, until I finally give in and eat and then I just sit around depressed and crying and throw up if I feel like it. The reason I don't throw up very often is because I'm just too damn lazy. Anyways, is this normal? Do I have an eating disorder?