I suggest several different avenues that you could go down. First of all, I believe that you need a complete series of blood work done...also, liver function tests, thyroid tests, etc. Much information can be obtained from your blood. Also, have you had your blood sugar checked? Have you recently completed a round of antibiotics or are you currently taking antibiotics? Some of them have adverse affects which include hearing loss. You also may want to look up Lupus...it's an insidious disease that is a master of disguise.
My last suggestion is that you find another doctor with which you are more comfortable with and one who will answer your questions. It is crucial to your good health that you have an excellent patient/doctor relationship.