Hi Sarha,
My husband finished Head and Neck Cancer Treatment 8 Years ago and 2 years ago finished almost the same treatment for Small Cell Carcinoma in his Trachea (A Weird One for sure). His voice has gotten really horse and he sounds terrible. The ENT thinks he is using his False Vocal Cords and that he should see a Speech Therapist. My Husband doesn't want to peruse another Dr. There is always peace of mind after you see the ENT and He scopes the throat and says nothing to see here! Hope you get answers Stay Healthy!