Chest pain during running. Or ignore it?

Hello I'm suffering from chest pain for the last 9.5 months.The pain is mild ... Done all the test like ECG and echo in the month of April and results are normal I did Tmt in the month of August 2022 and it's negative... But chest pain happens sometimes I want to discuss one thing, I m doing physical activity daily as a routine activity.. I'm doing a 30 minute brick walk then running for 1.8km and after running doing slow walking for 20 min... So all over taken 1 hr daily exercise No pain during brick walk, but running time when I cross 1.2 km pain starts not daily but sometimes... Pain is someday on the left side and some day on the right and sometimes in the middle... Should I worry about this pain or ignore it? Pain is not heavy (mild)