If i eat sugar like big piece of chocolate cake i get chest tightness, shortness of breath & sometimes heartburn. i almost always have chronic fatigue every day even if i barely eat any sugar that day. what is this?? ekgs & peak flow always normal?

Yes, anything that cause’s gastroesophageal reflux can cause chest tightness and shortness of breath. It can also lead to bronchospasm which can lead to these symptoms. Aggressive treatment of GERD often helps with these symptoms so you should see a GI doctor to get the GERD treated. Avoiding sugar should help with the fatigue symptoms. Good luck!