We can only give you suggestions to explore..
The links I posted have more info on symptoms & various treatments..
If the mercury symptoms do fit..

If they don't fit then ortho/ spine or possible expert chiropractic might be explored..

Many have mild issues in spine , or soft tissue factors...and surgery is not needed, but expert PT or expert chiro can help..

Do you have the written MRI report? The wording in it may give more clues other than just what the Dr tells you..