Is this chest pain serious? Strssed out.

Hello Doctors, I am suffering with chest pain (right side and ribs) and in the middle of upper abdomen that comes and goes for almost an hour since around a month. While this pain occurs, i feel very anxious and stressed. My weight is 93kgs and height is 5'6", I contacted cardiologist to get some tests done to eliminate heart related issue, cardiologist confirmed all good with heart. Got my stomach ultrasound scan too, all looked fine. Doctor's have been prescribing me betablockers and stomach ulcer / digestion related drugs, but this hasn't been helpful much. Personally, when gas gets released out of my body, i feel better. I am not sure if its GERD/Angina, About to contact stomach specialist in few days now. Can someone please help me understand why this is happening. As this is happening around since a month, also cardiologist confirmed not related to heart based on tests (ecg/treadmill run test), so wondering what could be this. Please help, i am really strssed out.