Gern, there are links to medical help for singers on Threads on the Singing Voice. I'm at a different computer - can't add a link right now. Maybe someone else will add a link or I will do it later when I am back in my studio.

There are ways to maintain healthy vocal folds without damaging them when singing, and one of them is to NOT "belt" your voice out. Belting eventually leads to damage, no matter how you hold your jaw. You can get volume by floating the sound on a well supported cushion of air, rather than pushing against your vocal cords for volume. I'll write more later.

Alice