Bowling with a shoulder injury

[Ticker]

Anyone got any care tips/help when it comes to bowling with a shoulder injury? I am supposed to be bowling in a tourney,my one and only each year and I have managed to do something to my shoulder meaning that I have a fair amount of pain and also some horrible "Clicking" on occasion (Not sure if its ligaments,muscle,something else or all three).
I really want to bowl,especially as I have just bought some new/used equipment (My first purcahses for about 4 years) and I would be gutted if I was not able to bowl.

Any help would be most welcome