what is gastroesophageal reflux disease
A. Gastroesophageal reflux disease, or GERD, is a digestive disorder that affects the lower esophageal sphincter (LES), the ring of muscle between the esophagus and stomach.Many people, including pregnant women, suffer from heartburn or acid indigestion caused by GERD.. Gastroesophageal reflux disease, or GERD, is a digestive disorder that affects the lower esophageal sphincter (LES), the ring of muscle between the esophagus and stomach.