Pneumonia

If you are experiencing a sharp or stabbing chest pain that worsens when you take a deep breath or cough it could mean you have pneumonia, [7] especially if you’ve recently had a respiratory illness such as bronchitis [8] or influenza. [9]
How to Treat It
See a doctor if you think you have pneumonia. In the meantime, get plenty of rest and drink a lot of fluids. Your doctor may prescribe antibiotics or antivirals. In severe cases, hospitalization may be necessary.
Conclusion
Left side chest pain can be traced to a number of different conditions. If you are not sure the reason behind your chest pain, visit a doctor so you can start working toward a diagnosis. Chest pain can vary from mild to severe and life threatening.
Reference:
[1] https://my.clevelandclinic.org/health/diseases/17019-gerd-or-acid-reflux-or-heartburn-overview
[2] https://www.medicalnewstoday.com/articles/307863
[3] https://www.mayoclinic.org/diseases-conditions/myocarditis/symptoms-causes/syc-20352539
[4] https://my.clevelandclinic.org/health/diseases/17353-pericarditis
[5] https://www.mayoclinic.org/diseases-conditions/angina/symptoms-causes/syc-20369373
[6] https://www.nhs.uk/conditions/heart-attack/
[7] https://www.healthline.com/health/pneumonia
[8] https://www.healthline.com/health/bronchitis
[9] https://www.healthline.com/health/cold-flu/flu











