I got like that a little while back. I stopped eating everything for just over a week - i kept myself going with water. I couldnt even think about food without gagging and almost bringing the water back up.

In the end i just started to eat small little bits of food that were fairly bland every half hour and that got me back to eating - but i had the worse cramps EVER.

I still dont know what was actually wrong with me - somethings telling me it was just a cold but it must've been more than that to put me off food. Even when i got high i didnt want food - and normally i cant stop eating them i'm stoned.