a few weeks ago I thought I had a cramp in my left calf, but as it hung on now for about 4 weeks, including 1 week of rest I think I pulled something. Tonight on the treadmill, I felt/heard a pop in the left calf and felt a sharp pain. the pain is now worse and goes from my left calf to my achilles. I m not sure if I should go to an urgent care, wait to see my md tomorrow or just ice & rest. No bruising or swelling yet, about 1 hour post injury.