Jamie, people react differently and I was once very worried about my voice too particularly I am a school teacher. I had my oncologist reassure me all the time that my voice box was not damaged and it took time to have my voice recovered. For about 1 or 2 months, I could just whisper and felt really frustrated. Things however did improve and gradually I could talk quite normally in about 3 months post treatment. Of course there is still the hoarseness even today, almost 3 years post diagnosis due to a lack of saliva. My voice varies every day but can communicate with others without problem. My voice sounds the clearest when I am crying and talking at the same time because my tears are around my voice box, giving it a kind of lubrication. Funny! So don't worry, things will get better gradually and slowly.
Karen.