Well, I talked to the doc today (Friday). She said his gums do not look swollen or red, so there is little chance that this is dental. Oddly enough, tonight I just noticed that his right ear looked a little red. The exterior portion of the ear canal is swollen. I'm not sure if this is the ear infection or a tumor expanding. Sam seems to be showing a new symptom the day after I take him to the vet.

It may also be that he is scratching the ear. Of course, when we were at the vets, the swelling behind the ear and cheek had subsided.

SIGH