Take antacids as directed by your doctor or by the directions on the Cure of heartburn during pregnancy Strain the solution and drink the tea. It comes from acid backing up from your stomach to your throat. This flushes off all the digestive juice from the stomach leading to indigestion. A Cure of heartburn during pregnancy block placed under the head of the mattress works well, as does a wedge pillow. The gut bacteria isnt so black and white. This is a permanent change in the lining of the esophagus. More recently, rare but potentially serious complications have been reported in some patients taking cisapride.