12 year old cat had UTI back in august. Was treated with antibiotics things cleared up but he still had bacteria. Now in Jan urine sample showed alot of bacteria so gave him more medicine and now that cleared up. But back in August after I stopped medicine he seemed to be drinking a lot more water than usual and peeing much more. Could it have been a result from the UTI or perhaps a coincidence that he's now drinking much water and another problem has happened, he seems happy and fine. Vet recommended a blood test and thyroid to see if its anything else?