I am experiencing chest pain or discomfort (side: both) (quality: stinging or burning sensation) (severity: moderate) .

Chest pain: Chest pain can be a symptom of heart disease but may be may other things such as esophageal spasms, respiratory disorders (asthma, COPD, bronchitis, infections), and muscle problems to name a few. It really depends on the clinical situation and other symptoms you may be having. If you are having symptoms currently go to the Emergency Department NOW!