I have been cheering for my school athletics contest and now I cant sing
Plese help me sing again
Unless you were cheering so hard you tore your larynx (in which case, you would be writing this question from the emergency room), you're probably just a little hoarse. Tea with honey and ginger will go a long way towards soothing any discomfort you might have, but otherwise, try to talk a little as possible and everything should be back to normal in a day or two.
I would just let your voice rest for a while...