Do you have your written MRI report?
That will describe better for us in medical terms what was found and if mild, moderate/severe etc.

Some of what you describe related to your job and arm/hand /neck pain could be related to Thoracic outlet syndrome -TOS for short..
The extreme fatigue could be fibromyalgia? If other symptoms fit.

But if you can post the MRI report findings, that will give us a better idea of things.

What kind of surgery was the doctor talking about?