We got our new kitten today. He's a 13 week old oriental. He seems to have an upper respiratory infection of some sort. He has discharge from his nose and eyes - one eye in particular seems to be bothering him, he's not really opening it. He also seems pretty lethargic for such a young cat but I guess he might just be unsettled from moving to a new home. The vet can't fit him in for a new kitten check till Tuesday. Should I worry? Do I need an emergency appointment before that? I don't know if it's just like a human toddler having a cold and I'm worrying for nothing, or if it could actually be serious. Any advice appreciated. Thank you.