Our cat recently started having trouble peeing, and has been peeing in places she never has before, and the pee has some blood in it. We of course took her to the vet right away (and managed to take a pee sample too) and they gave her some antibiotics and pain medication. It has now been 48 hours but she doesn't seem to be improving. I thought, for humans anyway, that antibiotics kick in pretty quick and you should see a change almost right away. Is this not the case with cats? Has anyone else had this experience? Is it different if it is a more "severe" case? We have changed the food (no dry food, special food, etc.) but I"m just paranoid and a bit worried and if I should take her back to the vet I will. They did say they would call after 3-4 days, but I dont know if that's becuase they don't expect any change for 3-4 days, or because they expect her to be better by then. The antibiotics was prescribed for 10 full days... anyonw have any idea what's going on?? They stated that there was a high white blood cell count in the pee indicating that it is fighting an infection... but now i am wondering if it could be something else???