Should I be worried???
I think it would be best to call your doctor, or go to the ER. How old are you? Any tingling on the left side makes me concerned for heart problems, or stroke. It could be your B12 is low. I mean it could be a lot of things, but I don't think numbness and tingling are a normal postoperative symptom, at least not in your fingers anyway. I hope everything turns out okay!
I had numbness in my left arm after my first surgery, i was told it was because of the way you lay on the operating table. No one seemed really concerned about it. It eventually went away. Do you have any herniated discs in your neck? I've gotten numbness in my pinky and ring finger due to herniated discs. So it might be something to do with your spine. Best idea is to call your Doc just to be on the safe side. Don't worry, though.