Experiencing Chest pain since 3 months. Sometimes pain in left hand also. Location of pain differs( sometimes in the centre and some times left lower ribs). Sometimes also felt gas stuck in the chest and after burping or passing gas feels relieved. 3 months ago we visited a cardiologist and he had done checkups and  ECG which was normal and he prescribed some antidepressants (zaptra and etilam), after taking these medications I also feel relieved. Since 4-5 days I am again experiencing same heaviness in the chest. I am unsure about the cause of this chest heaviness and want to know what is causing this.