A: Acid reflux is normal during pregnancy and is the result of hormonal changes that cause a relaxation of the sphincter muscle between the upper stomach and the esophagus. As the baby gets larger, the top of the uterus can physically push up on the stomach, worsening the reflux. Simple measures like propping pillows up so you do not sleep flat can help some women, as well as not eating or drinking after you finish supper. There are many different medications available to help with chronic acid reflux, and some women may require more than one type of medication. Asking your doctor about other medication options is a good idea if your reflux has started to cause vomiting. The good news is, pregnancy-related reflux almost always gets better after delivery.