This will keep your head and esophagus higher than your stomach. If you can't use blocks, sleep with several pillows under your head and shoulders. Avoid bending over, especially after eating. Also avoid straining during bowel movements or when urinating or lifting things. Don't wear clothing that constricts the chest or stomach.
Smoking often causes the stomach to make more acid.
If you are overweight, lose weight. Ask your doctor for a weight loss plan. Your symptoms don't improve in a few days, or they get worse. You develop a high temperature. You develop severe chest pain along with nausea, sweating, or shortness of breath.