The side of my face when i eat something it starts swelling up and real hard ball near the ear it hurts ive got to stop eat and it come back?

ENT doctor can check: These symptoms suggest there is a blockage of the salivary duct that empties saliva from one of the saliva glands. There could be a salivary "stone" or something else blocking the duct. The swelling is the buildup of saliva behind the blockage. A visit to the Ear Nose Throat doctor can help figure out and get rid of the problem.