I pulled my trap I think but I have a tingling feeling in my elbow, forearm, palm of hand, thumb and index finger, what's wrong?

Nerve injury. You seem to have injured either ulnar or median nerve in forearm or wrist. You may need ncv and EMG test.
Nerve stretch. Injury to the shoulder followed by numbness or pain in the hand could indicate stretch or injury to the nerves around the shoulder. These often resolve spontaneously.