There aren't too many effective articles on recovering your singing voice. Remember those nodules? They don't have to be permanent.
"With voice irritation, the vocal cords can develop nodules, which are small bumps, or polyps, which are made of swollen tissue that covers a broader surface of the vocal cord edge. Most nodules and polyps can go away on their own, with good care, said Dr. Marvin Fried, chief of the Department of Otorhinolaryngology - Head & Neck Surgery at Montefiore Medical Center in the Bronx, New York."
Get the full article here: http://www.cnn.com/2011/HEALTH/02/12/voice.vocal.training/index.html