What Cause And Treatment For Calf Pain?

I have been walking 2 1/2 miles a day for the past two months. Recently I have developed a shooting pain in my right calf. As long as I am active I am pain free. I am bothered mostly after 3 to 4 hours of sleep. It can be painful to try to get out of bed and takes a while to stop after I get up. Any advise?