Chest pain- plz help. Tmt- allgud.

I feel depressed coz unable to do physical activity- can't walk for long, can't exercise, can't push heavy objects coz literally all of these hurt my chest- burning aching discomfort spread all over left shoulder, neck, throat, dizziness, fatigue- all signs of angina.... done many EKG's, echo, stress tmt- allgud... no high sugars, lipids , Crp... .. no premature heart disease in family... calciumscore=0 My cardio tells me to ignore the chest pain- do 30 mint moderate workout daily.. did today n it's 1 hour since I stopped it still my chest suffocated Gastro doctor says it's coz of sphincter relaxing n pushing acid up and stomach muscles squeezing which causes u problem in chest Only heart test left is ---- CT coronary angio but seeing the level of radiation n test price can't go for it.. plz suggest