I've had upper right arm tingling/pulsing sensations which has turned into ring/pinky finger numbness as well as hand numbness on that side.

Ulnar nerve. The finger numbness you describe corresponds to the distribution of the ulnar nerve. The lack of any real specific information in your post does not allow any more helpful response. Your post is just the beginning of a clinical history, not the end. If you're concerned, in your case HealthTap (or Dr Google) is no substitute for a flesh & blood doctor in a brick & mortar office.