Ouch, that can hurt. Sometimes it can even lead to throat bleeding. I remember once when I threw up a lot and the insides of my throat got cut. I kept spitting out blood for a while. The best way to treat this is to o nothing at all. Over the next few days, you will get your voice back. But there are a few things that you can do to speed up the process. Drinking warm lemon, honey tea is also good for the throat. Add some ginger to the mix as well. You should be fine in no time. Get well soon.