I've been getting these gas like symptoms for few weeks . The symptoms are a kind of gas pressure between breasts & sometimes in upper to mid back. There is NO pain. Caffeine can trigger it or sometimes acidic foods. Sometimes it feels like a SLIGHT nausea but subsides within about 20 mins. I gave sensitive stomach to begin with. Does anyone get this because I'm starting to catastrophize that it's stomach cancer or some other cancer or some horrid disease. Please respond as soon as possible as I'm really getting in a panic state over this. Thank You !