Around a month ago, I suddenly notice a pain in my throat when I yawned; every time I yawned, I felt a sharp pain in my adam's apple. Now, I'm also in a band, and I do some backup singing, and I also noticed that I was no longer able to hit any notes outside of the octave in which I normally speak. After a week, the pain went away, but my throat has continued to feel strange, and I still have no range whatsoever in my voice.

Should I see an ENT immediately?