I noticed yesterday a hard lump right on my jaw bone, about half way between my ear and chin. It seems a bit like the beginning of a zit, but is very large and I am concerned it may be a tumor. It seems too large to be the beginning stage of a zit and I rarely get them. Should I be concrrned? Is there any way to tell if it is cancer? If it were cancer, would facial hair NOT grow on the bump? Any thoughts?