I am having pain which moves from my top left back tooth to my bottom left back tooth. At the same time I have been having a "tickle" in my throat which has caused excessive coughing and kept me up at night. This has been somewhat alieviated by taking Delsym cough medicine. All this has been going on for about 1 1/2 months. Now my right ear is "blocked up." I have been to the dentist and he see no dental problem, either by examining by eye or by x-ray. I have been to my family doctor and to an ear/nose/throat specialist. They have seen some "aggravation" of my sinuses, and have prescribed antibiotics, but after a month of this, nothing is improving. What should I try next?