Torn rotator cuff?? Other things?

So about 5 weeks ago I fell at gymnastics on my right shoulder, and through out the weeks ive had cheer, and gymnastics and day by day my shoulder has been getting worse. Today now when im doing nothing it hurts and when i move it or put weight on it by picking something up or pushing my body up i get sharp main going through it. So what should I do I have a comp. in about 25 days and its really important still not sure what to do..?? any help