No, I didn't read about his vet trip. It could very well be allergies...Jack does the same thing (he gets really close down to the floor and kinda breathes weird...almost like a coughing...and he sneezes a lot) and it was determined that he just has a little bit of a allergy problem. This time of year is when he acts like that more. I would definitely talk to your vet about it though. A lot of times when these symptoms come up and they are mixed w/ runny eyes or even throwing up, it could be a number of different things including a upper respitory infection which is highly contagious to your other kitties.