Yeah your mouth piece could be causing this. Do yourself a favor and clean the thing lol.
Aj
i just googled fordyce spots on the lips and that maybe it. im still not sure though
this just occured to me today at practice... i play football and i have been using the same mouth piece all season. its pretty dirty and has probably touch a lot of locker room benches and floors. maybe this is some kind of fungis?
This doesn't sound like an std, but might be fordyce spots or an allergic reaction to something.
Google fordyce spots on the lips and see if it fits.
Aj