In my 30th year since qualifying as a teacher, my voice "went" last term.I've had an endoscopy to check the state of my chords and both the consultant and the speech therapist have said that my voice is just fatigued. (I did have a few weeks of cure whilst off work recovering from a slipped disc!) However the both think its worth treating possible acid reflux which is not necessarily associated with indigestion pain. It can be silent. So now I'm taking a double dose of proton inhibitors and gritting my teeth every time I feel the need to raise my voice in school. I've managed fairly well this week and I think I will be able to sing tonight!