Hello. I was diagnosed with GERD several years ago. I am 38 years old, female. Over a month ago, I started taking several vitamins due to fatigue but had to stop due to pain in center of chest. As if pills were getting stuck there, Since then symptoms have progressed. Stomach rumbling constantly even after eating. Now, after eating, about an hour later a burning sensation starts from sternum up into throat and even into shoulders and arms. This is unlike any GERD symptom I have experienced before which was usually just belching and having an acidy taste in mouth. I am scheduled for an endoscopy this coming Thursday, but I was hoping to discuss here before hand.