question: I have pain in the upper stomach, just below my sternum. Feels like it s being my stomach. Feels like I have been punched in my stomach. I am bloated and I cannot take a deep breath. There is also a lot burping going on. I have had this before....it can last from 4 hres to a couple of days. I ve been taking Prevacid for the last 13 years for GERD. I am wondering what it could be. Sometimes I feel nauseous but not every time. Thanks for your help.