My 4yr. old cat has recently been back and forth to the vet for what I thought were bladder infections. She started peeing in the bathtub and there was blood in her urine. So after antibiotics (which didn't work) and several more urine tests, the vet has no idea why she is still having so many problems. He mentioned that her urine had an unusually acidic Ph level for a cat with bladder problems. Apparently normal cat urine has an acidic Ph and cats with bladder infections typically have more alkaline urine. The reason he found this unusual was because acidic urine will usually break down the crystallites forming in urine, not allowing the infections to progress. She has been having these problems for months now, with no solution as of yet....the vet eventually told me that some cats just have these recurring problems and so to try to treat it with food to see if it helped (it didn't). She has an appointment with a new vet this week for a second opinion, but for the last two nights she has also been pooping in the bathtub. I'm getting a little concerned that there may be something more serious wrong with her, but can't really afford many more of those extensive tests that have so far turned up nothing. I've read numerous posts that said when cats start going to the bathroom where they aren't supposed to, it can be a sign of more serious problems. Has anyone heard of anything similar to this and could offer any advice? I'd really appreciate it. Thanks for any help