I have the exact same thing.The ENT Dr. told me that it is a "torus mandibular".(It is part of the jaw bone)and nothing to worry about. However, they may need to remove it if you ever need dentures or a bridge.
Yes you should be concerned. It may be nothing. It may be a cyst, or it may be something more serious. You need to go to a doctor. In person. No one is able to (or will) diagnose you online, whether...
i don't know but i got it as well just below the knee is it small and hard?
i believe it could be a condition known as "Osgood Schlatters Disease"
"A small, tender, bony bump may develop a few...