Ive lost my voice, How can I get it back asap?

So I lost my voice about 2 hours ago, Ive had a small cold since yesterday, I woke up today feeling a little bit better, Went on with my day, Then all of a sudden this evening as I was talking to my friend it just slowly went away.. Now Its basically gone..I need it back by tomorrow because all I do at work is talk (phone & radio) and I need my voice, What can i do to speed up the process?

Thanks