I read your question carefully and I understand your concern.
It might have been useful if you had added something on the distribution of the symptoms, whether they included all fingers or only some of them, only the hand or forearm as well, palmar surface or dorsal etc.
Anyway from the present information my primary hypothesis would be a
carpal tunnel syndrome, cause by compression of a
nerve in the wrist, it is very common. A nerve in the back of the neck is also a possibility, but usually there is some
neck pain as well. Anyway the two conditions can easily be differentiated through nerve conduction studies and neck
MRI (if distribution and conduction studies indicate carpal tunnel MRI may not be necessary). Neither is a condition to be alarmed, in the sense of life threatening, but you should be checked.
I hope to have been of help.