Chest/diaphragm discomfort and palpatations

most days recently I have like a pressure ,bubble feeling in my chest area,it gives me palpatations and freaks me out ,and burping ,I have acid reflux and take omaprazole ,anyone else get this? ruins my life honestly

i have been having exactly the same for days now i ended up going to a&e yesterday i was so stressed about my chest they did ecg heart trace and bloods was fine they said probably anxiety but im still worrying now