I have this lump behind my ear that has been here for over a week now. It does not hurt (don't know if it ever will) but when I touch it, its extremely hard. Feels almost like it is bone but I know its not because I don't have it behind my other ear. It is not moveable at all nor is it painful to the touch. It seems to have grown in size a little but not much from what I can tell. Is it a lymph node even though it is a hard lump? Or could it be more serious? (answer will be hard due to lack of examination and I understand that)