Chest pain when i sit a certain way and after i eat i have heart palps.. gerd or heart related? been to a cardiologist it went good but still curious

Chest pain(CP): If you went to a cardiology he is testing you to ruled heart disease as a cause of cp. Gerd also can give you CP that can mimic a pressure pain like a heart cause. Acid reflux can cause esophageal spasm. Avoid food that cause you heartburn and see a GI doctor to ruled out hiatal hernia and infectious disease like h. Pylori by an endoscopy if indicated.