oh no =( sleep and food are so important. Is there any way you can force yourself to eat something, or to drink a bit of juice? Sometimes that can go a long ways.
to me it sounds like your just going through a rought spot. doesn't mean your bf would be better of without you - how about the companionship you provide, someone there.. I'm sure there are good things about your relationship and he would be really sad if you weren't there.
I don't know exactly what happened with the sign, but i'm glad it was just a sign and everyONE was ok. And that means you have a chance to make sure it doesn't happen wtih someONE... everyone wins right?