male, 58, 140 lbs, 67 inches. had cabg (quad bypass) on 10/11. recovering well. visiting nurse says lungs clear, heartbeat strong and steady. bp is good... watching diet,getting exercise each day (walking). have to pace myself and go slower and occasionallly experience sob. my ? is about my left leg. they harvested the veins from the right knee area, but i find my left leg feels stiff when walking...is that normal?