tumor or abcessed tooth?

[binky]

So, Saturday afternon my 19 yr old cat's cheek swells up to the size of a superball, and of course the vet is closed until Monday. I just wondered if anyone would care to venture an opinion as to what it might be? I am hoping just an abcessed tooth, because of course we are having money issues as usual, and god knows what this will cost me. We are of course calling the vet first thing tomorrow morning, but when it rains it pours (car repairs, school pics this week) - lovely. I will update when we get home from vet tomorrow, but I guess I really just needed to vent a little!