Could enlarged uvulas with white sores on them have anything to do with mono?

That could be one sx. Mononucleosis presents with swollen tonsils that may have white to yellow exudates, skin rash, enlarged lymph nodes on the front ; back of your neck and enlarged spleen ;/or liver. Your white blood cell will be elevated. A monospot test will show - or + for mono ; antibody titers can distinguish btwn old vs new infection.