Have you tried running for 10 minutes or some kind of excercise? Try eating very small snackish meals, start with crackers or carrots, maybe some fruit, drink a milk shake, etc.

When I first got hit with extreme anxiety and panic attacks I literally ate nothing for a month. I drank A LOT of ensure so try doing that as well to get your nutrients in until you get your full appetite back and lots of water as well......when I finally felt like I could eat and my medication finally kicked in I wanted to eat the entire frig!