New Here

Hello everyone. I recently realized that walking two blocks, going to the store and buying/eating huge quantities of food at 2am is probably an eating disorder. That and the fact that I can't stop it once it's started. I did it last night and I still feel gross.
I'm trying to figure out where to start . I've even be happy to cut it down to once very few months or something.
Any advice will be appreciated.
Thanks very much