Please make some life style changes such as taking a late night snack,
drinking cold milk, avoiding heavy meals
and eating frequent small meals, avoiding too much of caffeine, tea, smoking, fried food and drinks both alcoholic and non alcoholic fuzzy ones, avoiding heavy exercises within 4 hours of a heavy meal, raising the head end of the bed by pillows to 30 degrees, and avoiding lying down for least 2 hours after food.
If it is a mild reflux, these lifestyle changes will control it.