hi, as you mentioned about the C5 & C6 disc degeneration disc disease, the muscles supplied by them usually gets involved. Also due to continuously stress applied onto the muscles of the neck, the muscles of the neck are always in a state of tension which leads to the disturbed blood flow to the brain and there by leads to headache and other symptoms. Getting treated for the pain and spam in the neck region will help you ease of the symptoms like headache, earaches and toothaches. Also getting checked by a dentist for the toothache will clear any doubt about the pathology of the oral cavity. for the disc degeneration in the C & C6 region I advice to take therapeutic ultrasound therapy and TENS therapy which will alter the pain and spasm. Also performing regular strengthening exercises for the neck, upper limb and shoulder will help you ease of sysmotoms. Usually along with the medicine, physical therapy plays a good benefits. I have personal experience of cases with such symptoms and 99% of patients recover. I am hoping the same with you. As surgery is the last consideration made by the surgeon. physical therapy is a slow process but keeping patience and undergoing physical therapy will definitely give you ease of the current symptoms. with the grace of God I wish you a speedy recovery.