DS (20m) has been diagnosed with impetigo plus an associated slight fever and a bit of redness in ears (as in, visible to doc looking into ears). He has three sores around his mouth (first one appeared 48 hours ago).
Until today he ate well, as usual, but today at lunch he gave a great cry of pain and was inconsolable from the moment he started chewing his food (poor soul was saying "hungry" and "sore" through the tears). Lunch had to be abandoned. He won't let me get a proper look into his mouth but I think I can see another of the sores (bit like ulcers) inside one cheek. Rang GP, who said that impetigo is rarely inside the mouth, but that it's theoretically possible so no change to diagnosis (fair enough as we were just talking on the phone and I don't have a lot of evidence). I have subsequently been reading threads here and fear it could be herpes.
Have read several other threads but struggling a bit to work out whether I am just being paranoid -- any advice?