During digestion, gas is produced in our gastrointestinal tract. This gas can exit the GIT through farting. Sometimes, it gets trapped inside the intestines. This trapped gas can move backward and release in the form of burping. The trapped gas causes chest discomfort, sometimes so severe that it may make you think that you have a heart attack. It feels like stabbing pain or a tightening sensation in your chest and abdominal bloating (34).