What could be wrong if you have pain in your back and neck with numbness and some dizzyness and headaches but X-rays and a sinus ct show nothing?

X-rays wouldn't really show much. When I had an X-ray done of my neck it showed the curve of my neckbone being backwards. So I was set up with a MRI to see if I had a herniated disk. The MRI showed degenerative disc disease and a bulging disk. A X-ray won't show those things. It may be disks that are pressing on nerves. I have all of your symptoms and have been diagnosed with fibromyalgia by three family doctors and a reumetologist. I do notice that when I take sinus pills that my symptoms are few. Don't know why. You should ask to see a rheumetologist or a neurologist.