I Am Experiencing Pain In My Right Calf. It Feels

I am experiencing pain in my right calf. It feels like a continuous leg cramp. It is worse in the morning--difficult to put weight on it. I have considered dehydration and yesterday drank as much water as I could and by evening the pain was gone. It has returned worse this morning and even though I am drinking as much water as I can, the pain is not diminishing. Hard to walk. Thanks