calf muscle, strained/pulled, what do you do?

About 1 month ago while playing tennis, I served and attempted to follow into net. (I’m a lefty if this makes any difference) Sudden sharp pain in my right calf, like someone hit me very hard with a racquet! What can I do for this?
I’m still playing tennis, but not as mobile.
I keep it wrapped with ‘ace’ bandage.
Still get little pains – almost feels like a cramp – when I push off with right leg.
So I am “babying it” for now.
I really can’t lay off 6-8 weeks (tournament time now!) Any suggestions or help would be most appreciated.
Thanks!