Hello! I recently discovered a hard lump on the outside of the lower left side of my jaw. It doesn t hurt unless I m messing with it (even then it doesn t really hurt me). It s not protruding from my face, and it s like that entire left area (from the chin along the hollowed-out portion below my teeth (where my gums are) is swollen culminating in a hard, immobile mass. I can feel it on the underside of my jaw too. It reduces in size when I brush my teeth, but when I go too long without brushing it swells again. I m just really worried because I don t know if it s something I should be worried about. I m also at college and not at home, so I don t know what I should do.