Should have been a slow Tempo (15-20mins) and it was such a cool morning I SHOULD have been running well. Instead, to see how good or bad my hamstring was, I got out for a walk and just an occasionl slow jog. Some pain when walking, more when jogging, so I know there's definitely a problem. I find this all so frustrating and I'm getting more down in the dumps as each day passes. Ultrasound tomorrow at 3:00pm so I might fnd out something then or on Friday when I see the doc again.