About 6 months ago, I had started having slight pain, tightness feeling and numbness on my left side, arm-to-hand. It comes and goes every now and then, but here lately it hits me during the early-to-mid morning. It may begin while I am driving along the highway, talking with phone to ear, typing on the computer, etc. At first I just thought I had slept wrong, but now I am not so sure. Can you give me anymore information as to what this may be?