I just looked up an ENT type of journal. They wrote that the likelihood of acid reflux coming into direct contact with the actual larynx seems unlikely and uncommon. Not that with active acid reflux hoarseness doesn't exist. From what I briefly scanned--not being an expert on either side of the discussion, seems it does affect the voice but not fully understood either.

When do you see the doctor? Could it be something different than past behavior? Have you had any recent colds? This winter season seems worse for many especially with lost voices.

Take a deep breath. Or Meditate.