Hopefully someone can give me some insight. About a month ago my cat was sneezing like crazy and sounded congested... finally took him to the vet and they gave him an antibiotic shot that they said would last 2 weeks - after 2 weeks he was exactly the same, so I called the vet and they gave him a different antibiotic in pill form. It's been about a week and he is STILL the same! He doesn't seem like he is SICK, I mean he is eating the same, he is sleeping in his usual spot, he doesn't appear distressed, he is grooming himself. I'm not trusting this vet! What could this be? Allergies maybe? The cat is 16 or 17 years old (not sure because I adopted him from a shelter in 2000 and the paperwork had conflicting ages on it)