My pinky finger of the left hand has had a numb, tingling sensation to it for almost a month and a half now. Should I be concerned?

Obvious question 1st. Seen a doctor about this problem? Did it start out being exactly as involved as it is right now or did it seem to come on more insidiously (meaning little by little?). Do you wear anything tight on that finger like a ring or anything else?Any trauma in the past couple of months to the fingers, hand, wrist, or elbow on the left? Yes, I'd want to find out about this problem and fix if possible.