10 Best Cardiologists in Sector 50

It would be advisable for him to consult with a cardiologist. Given his medical history and a family history of heart disease, he needs proper evaluation and treatment. 

Experiencing left sided chest pain and discomfort can have various causes. It's essential to seek help immediately, especially if the pain is severe or accompanied by other symptoms like shortness of breath or nausea. Consult a cardiologist for evaluation.

Severe pain in the heart area along with difficulty breathing can be a serious medical emergency. These symptoms could be of heart issues like a heart attack, or other serious conditions that require prompt evaluation and treatment. Consult a cardiologist for prompt treatment.

From the way you describe it, there is a likelihood that your upper back and left chest pain area maybe at play here. This may be due to many reasons ranging from sleeping in a wrong posture, muscle sprain o even something major such as heart condition. It is advised that you see a cardiologist or general practitioner to find the underlying issue of your discomfort.