There's hypnosis for that. (Seriously, not saying it flippantly, that's one of the things good hypnotherapists work on and get often fix within a few sessions). I recently helped a friend who couldn't eat and was bordering on serious health issues as a result (she's fine now) There's hope, you're going to be ok, just do what you can as you get there. And if you need to talk I'm up for that (not offering to trance though, I don't do that online, but I'm sure you can find a good professional in your area)