Recently, I noticed a small (~.5" dia) lump in the floor of my mouth. It is not visible from above, or below, but I can feel it. It all came in a day, I did not notice it when shaving a couple of days ago, but Friday night my jaw was somewhat sore like I had a cramped jaw muscle (which I get sometimes when yawning), and I felt and noticed the small lump.
Should I be concerned that this is cancerous? Can cancer tumors grow in a matter of a couple of hours (it has not grown since I first noticed it) ??
I no longer have a constant pain like I did Friday and Saturday, it only hurts if I press on it, or otherwise apply pressure. No pain in eating/swallowing etc, and no outward visibility inside mouth or on chin. It is right next to my jawbone under the molars on the left side.