Extreme gas and pain. For quick help.

Hello, my mom is facing this wierd issue of gas generation and depositing near left side underarm area and some near the left side arm tricep area. She feels extreme pain and this happens when she physical home work post any meal in a day. Rubbing and massaging her back area releases gas and she feels better and pain disappears. And after that no other kind of pain is felt. Our family doctor consulted us to show a cardiologist, we did so, and she is clear however they gave some meds. We then checked the X Ray of cervical area and discovered early cervical spondylosis and exercise and few meds was the way out and we were told that this gas issues comes from there. She told meds for few days and she was feeling fine but there were minor Gas issue pain. But now we think it must be now with stomach, still don't know what is this issue. My mother and father are fighting this challenge and I'm here to consult on my level so I can help them. Hoping for quick help. Thank you