WHat will help my rotator cuff heal faster?please answer it is important!?

I am very active in volleyball and when i hit the ball i hit it weird and my shoulder started to hurt the other day so i told my coach and she said it is proably my rotator cuff . But we have a tournament this weekend and the next should i play? is there any thing i will do to make it heal faster? i am a middle and backrow i am 5' 8.5" this is really important. i am 13 years old