Hi, i am 34 yr old female, i have had recently a piercing pain in my chest, as a result my heart started beating very fast for a few min and then it stopped, fearing something horrible i visited the doc, who told me that its just gastric acting up. He gave me some gas med, still my rapid heart beat does not seem to stop, it happens for few min and then it stops going all crazy. and yes i used to smoke before all this thing happened, now i have quit. Anyways can u tell me if its gas or heart problem?