Had something like this recently——recurring sinus infection that finally mad it into my jaw.
Megadose of antibiotics and prednisone, nothing else would cure it.
Go to a doc, if you wait you could get really sick, lose teeth, etc.
I had constant sinus problems for years with post nasal of nose dripping all the time. Had numerous doses of antibiotic and no help. Went to ENT and had CAT scan concluding that my sinuses were fine. Nueroligist figured it was neck muscles problems. With PT problems have reduced greatly. another option.