I'm also new to this. What you are feeling is like others have stated acid builds up when the body is stressed thus leaving you with a bloated feeling. When tense your body will do all sorts of terrible but harmless things to you. I've been diagnosed with chronic gastritis I'm 25 year old male. Through endoscopy. I've also had those tounge and still have the sensations, a tounge is a muscle with blood shooting through it. When tense muscles get stiff twitch and ache. Hope you find your answer