Sudden sharp pain in left leg's calf while standing or walking. It happens for a mild second or so but it is so sharp I have to stop putting weight on it and I literally can't move for that fraction of second. Pain again goes off and comes back randomly. I never had any kind of medical history in terms of injuries. I observed this kind of pain few days back when I was lying on my bed, about to for a sleep at night. After two or three days, today afternoon it again came back. I want to understand what can be source of this pain and how I can control this. I am not sure if this is a muscle cramp bcuz I had cramp once but this pain happens for a split second and repeats itself again after a while. Thanks a lot for all your inputs.