Maybe being sick is your body's way of telling you that you need so slow things down! Don't worry about letting other people down... thats not your responsibility, and you need to take care of YOU before you can even begin to let yourself worry about other people. I know that hard.. but like sky said, take one day at a time, on moment at a time, and just try and focus on the things that you can more so control - eating a sleeping. Well sleeping might be hard ... but at least resting. Try not to put too much pressure on yourself, these things can take time and you just need to try and be patient...
I hope that you can figure out things with your job.
Take care of yourself, and happy thanksgiving.
xo Jacq