Intermittent chest pain left side. Pain.

I have intermittent chest pain at left side which is at specific location and keep happening any time and resolve on its own. But again happen and this is from last 10 years. Not sure what causes. Sometimes when had pain also have some stomach activities may be gas and sometimes muscle feel like pain. Both reasons may contribute and pain keep remain for continuous days and resolve on its own, later after some days again or anytime may happen. Annual health check done and normal. Even Echo TMT ecg recently conduction as per physician prescription also normal. Only 1 point was which physician also ignored is mild concentric LVH. BP also checking regular basis and normal. This actually mentally stress me continuously as this is permanently not going and living with this pain now. Any suggestion or I will follow right lifestyle diet as I am doing and ignore this pain.