Omg yes Iv been feeling my heart quickly get fast and then stop with our going into an attack. Somtimes it’s a flutter! Rib cage pain too. Alwyas light headed. My eye sight gets like darkness somtimes and I try to walk through it and shake it off. Not sure about burping but I would doubt it!!!

This sounds like normal anxiety behavior unfortunately 😕 I usually just lay down and take deep breaths, a hot towel on my chest and ribs helps too! (It cuz also be caused by gas from anxiety 😳)