The IBS info is interesting. Do foods trigger it as well? Before I had my gallbladder out, and still now that it is out, one of the main problems is diarrhea. So far this week I've had it every single day, today's still early...
Mine was originally triggered by fatty/greasy foods. Now it's fats, grease, too sugary, too carby, or just eating before 4pm. I almost wonder if it's dumping syndrome, even though bile salts diarrhea is more common.
My point, bile issues can IBS like symptoms. Please push your doctor into gear or find another. You risk liver problems and possibly getting pancreatitis if this is your gallbladder. No one should have to live with that pain either. Since you're on a statin, OTC H2 antagonist (such as Tagamet) could be a problem as they can raise blood plasma levels of other drugs.
And as to why GERD can make people think they're having heart attacks. It isn't just pain. It's because your vagus nerve innervates your heart and all the way down to your digestive tract. Irritation somewhere else will affect heart rate and blood pressure. It gets more specific than that, but that's the simplest explanation.