So sorry to hear about your reaction to the flu shot. I had a similar reaction this year. I have Crohn's disease and have avoided flu shots for a long time because of a flare/reaction about ten years ago. This year at my GP's insistence, I got the shot. Within 24 hours, I was a wreck, and still am. But of course the doctor said it couldn't possibly be the flu shot. It must be my imagination !
Hang in there, I hope things turn around for you soon.