My thumb has been numb for the past 3 days and nowmy index finger is also numb. 12 years ago i had radial nerve damage and lost the function of my right hand but with therapy i got it back. not sure if the numbness is related but is this concern?

The thumb and index finger are innervated by the radial nerve; therefore, one should suspect it's related to the prior radial nerve damage. It merits a visit to ones neurologist for an evaluation.

The numbness corresponds to the distribution of the median nerve, and raises question of carpal tunnel syndrome. Have your doctor evaluate. An EMG/ NCV study might well be indicated to confirm. Hard to relate to prior problem but the testing of nerves will sort out.