My cat is 13 years old and she was put on antibiotics for a urinary tract infection. She has been on them for about 1 week, but today she hasn't eaten. She sleeps all day long, she hasn't leff the spot. Could this be the medication? I'm really worried. At first I thought maybe she was reacting because we had an earthquake nearby and sometimes animals react to that, but then I started to think perhaps it's the medication. She recently had blood work done for her annual exam, perhaps two weeks ago, and nothing negative showed up except for the urinary infection. I have sent this same information to her vet and hope she replies soon. I panic when it comes to my babies.