I have a small (approx 8th of an inch) white nodule in my oral cavity - the central lower portion of my inner jaw line, about 1/2 an inch below & backside of my lower front teeth. It presents discomfort upon touching it w/my tongue...started feeling it yesterday...unable to self observe without a bright light & a mirror. I have never had such a thing in this area! Should I be concerned? Please note that I stopped smoking 15 yrs ago; I was routinely seen by my dentist for many years w/o issues...regrettably I am currently unemployed/uninsured & have not been to the dentist in about 14 months. I have previously worked with Otolaryngologists, and perhaps I am being hyper aware of potential dangers...need to know if it is imperative to be seen asap, or...???