Feel like i've had heart burn across my whole chest all day sometimes it's worse hard breathe in. drinking milk helps, hurts mostly on both sides ?

Might not be GERD: Chest pain is nothing to ignore! the potential origin of your symptoms includes: heart, lungs, mediastinum, esophagus, musculoskeletal, pericardium (sac around the heart), pleuritis, bronchiitis, or referred pain from a remote site. Your doctor will be concerned about accompanying fever, blood with coughing, vomiting, shortness or breath, difficulty reclining, tenderness. Get checked please.