SOIA,Glad to know your Dr. has been thorough in the past and I hope at your appointment he finds something simple with a quick fix. Do you have a history of sinus problems?
My daughter has had a very similar situation this past week and after 2 visits to her PCP they decided is was stress causing her headache, sore neck and high blood pressure. I had suggested they check her sinuses and low and behold her right nares was inflamed.
Your ears, nose, and throat are all part of your upper respiratory system. They share anatomy and have similar mucus membrane linings, which means they get similar infections; an infection, an allergy, or another problem affecting one of them (from ear pressure pain and strep throat to problems with your sinuses and constant phlegm in the throat) may also affect the others.
I do hope things ease up for you.