hello.your pain could be because of nerve
compression as you have some spine problem and you got operated for the same.
other possibility is the diabetic neuropathy
which can give rise to similar kind of symptoms.
so my advice will be get your self evaluated bye physician, get your blood sugars well controlled and you might need the treatment for neuropathy as well plus get an opinion of the neuro or spinal surgeon who operated you or any other surgeon with the details of your past records.
examination and investigation may definitely give you some conclusion and then the treatment.
all the best.