Chances are you are singing way 2 hard and blowing your voice out. I've done this on a rare occassion, usually takes a glass of water and shutting my mouth for a few hours to get my voice back.

It sounds like you might really be in need a vocal coach. Seek one quick.

Jody


Jody Whitesides
A Funky Audio Lap Dance For Your Ears!
www.jodywhitesides.com