this sounds like to me a bad case of gerd. have your family practitioner check you out.
what to do if you aspirate stomach acid. sometimes i wake up with severe reflux having aspirated stomach acid. . this causes severe burning of the throat and coughing to clear it from the airway. when coughing more acid comes out of the airway and causes more burning. sometimes this persists for a couple of hours then the burning subsides but there is still some acid presented when coughing for the next day or sometimes two. .