My 7 year old cat was recently at the vet for a fever of unknown origin and was given an antibiotic injection and an anti inflammatory injection. He has returned to normal, except that he cannot sleep soundly. He moves, streatches, changes positions every 40 seconds to every minute. I can tell he's tired, but he can't stop changing positions. Could this be from an illness that was causing the fever? Or a reaction to one of the injections? The vet will be closed until Tuesday so I was just hoping for some possible answers before then. Thank you