m thinking it could be TMJ - which is a disorder of the jaw
joint. It can cause many symptoms, including ear or jaw
pain, as well as headaches, etc.
Do you ever catch yourself clenching your jaw? Does your jaw crack or catch when you try to open it wide, such as with yawning?
I would suggest starting with your family doctor - just to rule out any infection in the ear, however, if it is TMJ, the best person to treat it would be yoru dentist or oral surgeon.
Best of luck!