I have had heart burn since I was 12 years old. I have had extensive tests telling me that my heart is in great shape. However I still do experience from time to time(accompanied by wicked heartburn) light headedness, slight chest pain, shoulder and upper back pain. I have also experienced numbness in my right arm. Do you have any idea what this could be? I have had the exploratory surgeory where they stick the tube up your backside and stick a tube down your throat and they did not find anything. Why do I have heartburn that I can't get rid of?