Sir, in the last summer i suffered through a problem, i eat little bit chicken and after 20 minutes i drink PEPSI rightafter 15 minutes my heartbeat was so fast and i feel chest pain on the left side, i was completely scared that i have heart problem but i went to a hospital & me ask to doctor for ECG but my ECG report was ok, Then i go to for Medical specialist he treat me with Esomeprazole, Methycobal tablet & Ulsanic (Sucralfate) syrup. I continue that treament for 1 month after i left that treatment, but i still have sometime chest pain & left muscle pain. I know i still have stomach problem i will gas in my stomach. Could you please lead me in this matter that what problem i have & how should i diagnose it?