I have had upper and lower tooth sensitivity on left side for a few months, whether chewing or drinking.  The pain can also come without any reason and it goes from my lower jaw to my ear, to sinus areas and the top of my head.  Also, even when I sleep and  lay on my left side, the pressure on my cheek causes this pain as well.  I am 70 years old and have fillings in most of the larger teeth on that side.  I had recent removal of two teeth on my right side, could this cause movement from left to right, can it be sinus infection or what?
Thanks for your query, I have gone through your query. The sensitivity could be because of the worn out teeth, you can use desensitizing toothpaste like sensor instead of normal toothpaste. The pain could be because of the tooth infection. Consult your oral physician and get radiograph done to rule out infection at particular tooth. Later you can go for root canal treatment extraction of the tooth. Meanwhile take a course of antibiotics and analgesics. I hope my answer will help you. Take care.