So sorry to hear about the symptoms that you are describing. The seriousness of your condition depends to a great degree on the past medical history that you may have, ie, if you have had problems with your heart in the past, you are much more likely to be having problems currently. Otherwise healthy people can certainly have rare and serious conditions, but these are generally, by definition, rare. In your specific case, it is hard to say what is causing the symptoms, so I recommend that you speak with your doctor
. Your doctor will be able to ask more questions and complete a physical exam that will allow him or her to make sure that you do not have a serious medical condition. There may be some additional testing that he or she may feel is necessary to make sure that you are well. Heart burn, or esophageal reflux disease, is quite common and can be associated with eating spicy foods, caffeine, alcohol, or other things. Panic attacks can be common for some people, and are very treatable if intervention is provided in a prompt fashion. Speaking with your doctor about the symptoms that you are describing is appropriate, so please speak with your doctor soon.