This is kind of weird because it happens when im least expecting it.
Sometimes when im hungry and i try to eat, i feel like my throat is
starting to close up and i gag when i swallow. other times, its more
severe and when i eat, it gag, then i vomit a few seconds later. i cant
control when this happens at all. do i have an eatin dissorder? please help
me! :(

If it's not a conscious avoidance of food or purging after eating, then you don't sound like you have an eating disorder. It sounds like you might have something going on with your digestive system. Go see your family doctor about this.