Coughing constantly for a week. Worst at night or laying flat. Dry cough most of the time. Sometimes with mucus. ?
you did not say for how long its going on ,but sound like Acjd reflux ( GERD ) try sleepiing headend raised ,2 alkakline water , eat liuid food for dinner try zantec for 1-2 weeks , 1/2 tae spoon organic Vinegar in glass of warter helps.
if still persists see primary m.d or Lung doctor
COUGH, NO SPUTUM (NON-PRODUCTIVE)