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The chest pain
you have is in all probability due to alcohol and not due to heart and to confirm you can get a ECG done at a hospital during the time of pain.If the ECG is normal then even you will be sure that the pain is due to acid reflux
.Basically alcohol has the capacity to burn the internal lining of your esophagus
and stomach so it causes damage to the internal part there by causing pain in chest.What you can do is to get investigated to rule out heart problem and then get treated for acid reflux and a possible gastritis
.And the most important thing is to STOP alcohol or you will not be relieved of the pain.