Acid reflux or other digestive problems can mimic cardiac
chest pain. There are more conclusive ways to determine if your pain is cardiac in nature.
First of all, did the doctor give you a
nitroglycerin tablet in the ER? If he did, did it help? If the pain is resolved with nitro, that's a good indication that it may be cardiac.
Second, did he do an EKG? This would indicate any possible cardiac events. If nothing showed up on the EKG, then things are pointing more toward a gastrointestinal problem.
Third, did they draw blood samples? The lab can check various enzymes in the blood (
troponin I & CKMB) that become elevated following damage to the heart. If these enzymes aren't elevated, then there apparently wasn't an event that caused any damage to the heart.
Fourth, did they give you a "GI Cocktail" (sometimes called a "green lady") to drink? If so, did it resolve the pain? This drink is made of an
anesthetic agent, and antispasmodic, and an acid neutralizer. If you get relief from this drink, that's a really good indication that it was
heartburn.
Let me know what you find out.
P.S. - Just re-read your post. You describe the pain as "sharp, stabbing pain". That's not typical of a cardiac problem. Of course, there are no 100%'s in medicine, but typically, cardiac chest pain feels more dull, or perhaps not even painful, but rather "pressure".