I am having the same. I am releived with a burp. Two years ago I had my gall bladder removed so it isn't that. I have a hernia though and associate the burping with that. This is the first time I have had bad heart pains. they only last a couple of seconds. Last night I ate a lot of onions so I think it might be associated with that. Do you notice it while eating a perticular food?
I have been to the doctor in the past and to the emergency room for it to turn out to be nothing. I hate to go again and it is nothing.