Are you a professional singer?
Presuming that you have no voice change issue. In my opinion,
If it started as a foreign body sensation in your throat with dry cough more at night. There are 2 possibilities. It could be either GERD or reflux cough due to post nasal drip.
Next Steps
Would appreciate more information regarding your complaints for appropriate diagnosis and management.
Plz consult online.
Health Tips
Would suggest few lifestyle changes.. Like food habits, water intake etc