Pain, back and balance problem. Expert.

I am going through lot of pain in different parts of my body specially the back of my head and between the shoulder blades, the pain is not muscular it is felt in the nerves even sometime in my legs and hands. Also there is a lot of problems on my lower back. It's been more than 2 years I've been going through this prior to this I did some spine manipulative exercises for a year atleast and this problem started then only. Prior to the exercises i was fine and have no such diseases in my family which means I am 100% sure it is due to those exercises. Even after stopping them my condition is same after two years. Recently I have consulted a local neurologist he suggested some test blood urine and X-ray tests. The x-ray tests were done only on the lumbar and cervical spine and in both of them the doctor found problem but i have also pain in the thoracic part of the spine. I have also problem in balance and keeping myself upright and there is lot of issues I need to discuss with an expert.