What could this sharp acute left-sided chest pain be?

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I have gone through your query. A proper assessment of the condition can be done if you reply to the following questions. Does this increase with deep breathing? How long does it persist? Is it for a few seconds or minutes? Sharp pain and short-lived pain is less likely to be cardiac pain. Cardiac pain is usually retrosternal, persistent increases on exertion, and relieves with rest, associated sweating, and uneasiness. Are there any risk factors for cardiac diseases like hypertension, family history, or smoking? I think the possibilities are reflux disease, musculoskeletal pain, pleuritic chest pain, which is the pain from the linings of the lungs. Musculoskeletal pain increases if you press hard at the site of pain, while pleuritic pain increases on deep breathing or coughing.