Light pain on left side of chest. It is intermittent. No issues in breathing.no shortness of breath. I do smoke. I am not sure if it is because of smoking or is it a symptom of Covid19. This issue has occured to me in past too once or twice in last 3 years and it gets normal after a week. This time it's been more than a week. It happens 2-3 times a day and then the next day it's normal and the again next day it happens. There are no other symptoms of Covid19 I have experienced till now since lockdown.