I have been hoarse for three weeks. I do not have a sore throat, or fever, or cough. My voice has been hoarse, almost gone, ever since I had a coughing spell at a dinner. Once I could talk again about ten minutes later (I left the table), my voice was weird. It has not returned. I saw my family doc for an annual check up two weeks ago. He said to return if it continues. What could this be?