When I put any pressure on my left arm or hand. (like laying head on arm or hand while laying down, goes numb. Circulation problem?

Pinched nerve. Symptoms suggest pinched nerve. It could be at wrist ( carpal tunnel) or neck. Since you take norco, (hydrocodone and acetaminophen) it seems that you may already have neck pain and the posture of your arm causes pinching of nerves in your neck. See aneurologist.