I need to get over a stuffy nose FAST?

ok so i have a stuffy nose and a sore throat and it suck because i'm singing hallelujah Jeff Buckley and i have been practicing and i don't wanna be replaced because the chick who will get my place is a total douche bag and its a pretty hard song to sing in this kind of condition and i really wanna do good so good home remedies for mostly the stuff nose because that makes me sound the worst