Just started a half hour ago fingers on left hand are tingling very mildly. mainly pointer and middle fingers stronger when arm is straightened out

NERVE PROBLEM: Sounds like a peripheral neuropathy or "nerve condition", affecting the sensory nerves in your hand/fingers. Could be due to nerve impingement that is occurring at the elbow (more likely in this case) or wrist. There are also other inflammatory or metabolic causes to consider. Try over the counter anti-inflammatories but if not improving see your doctor.

One of the most: common causes of finger tingling is compression of the median nerve at the wrist--carpal tunnel syndrome. The fingers you describe are commonly affected. What is unusual is that you say it is worse when arm/wrist straightened? Normally this would help; we use wrist splints to treat carpal tunnel. It may very well resolve on its own. If it lasts several days, consider a doctor visit. Best wishes:)