Hi Kim,
Personally, after what I have been through and learned the hard way, I would get a referal to an ENT or Head and Neck surgeon who sees these kinds of cases. I had a doctor, oral surgeon, dentist and hygenist (who routinely checks for cancer) look at it and tell me it was nothing to worry about - which turned out to be a stage III/IV SCC and could easily have killed me. Had they not "blue skyed" me I may have sought treatment earlier when it was still a stage I or II. Cancer is a specialty and not all doctors will immediately recognize it. At least they did a biopsy which is a pretty reliable test.

Don't let this scare you. As Brian said there could be many reasons for the white bump. If it were me, I would want the earliest possible accurate diagnosis. Cancer is not the kind of disease that you should fool around with an inaccurate diagnosis. Then you can move on without lingering doubts.

It's great that you don't drink or smoke and caught it early.