I am sorry to hear about your symptoms, but am really sorry, without a clinical evaluation, it will be really difficult to diagnose your condition on net. A few possibilities are
fibromyalgia, chronic fatigue syndrome, severe
anemia, spinal nerve compression high up in the cervical spine, ankylosing spondylitis, osteoarthritic changes of the vertebrae, calcium deficiency, low Vit D, ALS, electrolyte disturbance, peripheral neuropathy due to diabetes or hypothyroidism or due to bad posture.