Thank you for your advice.

I think they have ruled out any cord compression but think there could be some nerve damage or polyneuropathy?

Can you please explain CBC. I will have blood tests tomorrow. Is being short of breath a symptom of low B12?

Is there anything else I should be asking? The pain is predominately in one side but also some pain on the left side but my main concern is walking which is becoming more difficult by the week. I think I can walk maximum 10 minutes and the pain and burning after walking is intense. I am not a person who likes too make a fuss but feel I am being pushed from pillar to post with no real concern from the health professionals with regard to my deteriorating health.

Many thanks sarah