Upper back pain and chest pain/discomfort that comes and goes. is it gerd?worried heart attack.im 19.might be acid reflux,but waiting for blood work.

Heart not likely: Your symptoms are not typical for heart. Most likely they are musculoskeletal in origin with many other possible causes possible as well. Keeping a log with your symptoms, including activities may only help in trying to identify a possible pattern. Having workup should help in clarifying. Anxiety is usually part of the complex.