When are chest pains a reason for concern?

23f, 150cm 40kg, on psychiatric medication (bupropion and venlafaxine). I get occasional chest pains that get stronger when breathing, on one side of the chest (usually right), so I assume it's related to the lungs. This has been happening for years and would typically go away after about 30 seconds so I never thought anything about it. In the past couple months there were two instances when it was more prolonged than usual and lasted several minutes, and both times it was on the left side. I wanted to ask whether it's something to worry about, as looking it up brings up ambiguous answers. Thank you!