I have this pain in my back and ribs all the time nonstop I feel like I am going to pass out and at times it feels like my heart is fluttering?

Pain in back and rib. With pain that severe please f/u in ER today. Could be GERD, gastritis with or without H pylori , gallbladder, but could be cardiac(coronary disease ,structural disease ,pericarditis), vascular ( aorta) or lung ( do you smoke? Follow up today in ER.