When stomach muscles relax due to increased levels of certain pregnancy hormones and your uterus puts pressure on your
stomach in the last half of pregnancy, you may experience a burning sensation close to your heart, as stomach acid irritates the lining of your esophagus. To help avoid heartburn, avoid spicy, greasy and fried foods and eat smaller meals, chewing your food slowly and thoroughly. Don't lay down right after eating a meal and it most likely will help to sleep at night with your head slightly elevated by extra pillows. Don't take any antacids without consulting with your doctor or midwife beforehand.