A week ago was at my desk calm in the office in the am. I started eating a double chocolate protein bar and immediately upon finishing I started getting tightness in my chest . Now, I do have acid reflux but it was not heartburn I really panicked there and started to think this is it I am having a heart attack..Ι got a coca cola and started burping. But I have never felt tight chest before so worried. Didn't have any other symptoms with the tightness and pulse / oxygen etcc was very normal. should I go to the cardiologist again?? (Was ok 3 months ago).