I was lifting weights in a gym class over a month ago and felt my forearm shaking. I was overexerting myself. After my pinky, and ring finger felt numb. I would rest it and it would get better for a bit. If I do certain things it feels worse. I believe this is my ulner nerve. No more of that gym class obviosly. Last night both my feet got pins and needles. It went away after a few seconds of shaking. I first thought this was unrelated, but I called my doctor and mentioned both things. He worried me with talk of MRI and MS. Could these be related? What could it be?