I constantly have this weird feeling in my chest...it's hard to describe. I get a lot of days of palpitations...but when I dont have palps, I always have this weird feeling like my vagus is almost triggered but not quite.....like the feeling you get BEFORE you hiccup, or have a palpitation, or take a deep breath. Like a faint hollow, empty feeling. Sometimes it will turn into palps or sometimes butterflies when my stomach starts to act up... but it anxiety. It's just a "light" empty feeling that I'm super aware of and is rather uncomfortable