If it was tooth ache related you would know it by now.

Sounds like it's in your gland area. Make an appointment in the morning and get it checked out as it sounds like you have a rampard infection going on.
thats what i thought but i just googled ''tooth abscess no pain'' and apparently it happens more than youd think. i dont think its a glad, it not quite for enough back. its kindof inline with the corner of my mouth, maybe an inch or so further back.

normally with any lump or bump i freak out and thing the big C. but its grown so fast im pretty sure i can rule that out.