If i'm burping a lot and i'm taking prilosec is that really acid reflux or a heart attack?

Consult with your dr: that is a wide possibility and it needs to be narrowed down to a reasonable cause, conventional wisdom points to "burping and acid reflux" relationship but talk to your doctor for more information.

Not heart: Symptoms from coronary heart disease are uncommon under the age of 40. Those over 40 can sometimes MISTAKE the symptoms of heart for GERD: Severe pressure discomfort in center of chest, sometimes radiating to left arm or jaw or between shoulder blades. The pain is often described with a clenched fist: squeezing or "like an elephant sitting on my chest". Often associated with sweating>>GO TO ER!!