My 7yo has been complaining of pain on one side of lower jaw, he said it's all the premolars/molar on that side. This evening it's progressed to hurting his ear and under his eye on that side. Eating seems to trigger it - it will last a while after eating and then will be ok until he next eats. I'm going to get him in to see the dentist tomorrow but any idea what it could be? It's been going on for at least a week now.