What Causes Shoulder Pain While Trying To Throw A Ball?

Hi,
I am Rnmkln and i like to play cricket. But i'm facing some problem while playing cricket.
I can bowl fast and i can hit hard through bat. But when i try to through a ball then i feel pain in my right shoulder.
Please suggest what should i do. I think this problem can overcome after doing some exercise.

Regards
Ravi Nain