Chest heaviness and heavy breathing, only on walking or doing some minor physical activity. This has been happening for the last 3 weeks. Consulted GP 2 weeks back. Had Azithromycin for 3 days. Had not helped. From yesterday having some chest pain, center of chest. consulted cardiologist remotely and he ruled out cardiac pain. Today morning after some minor physical activity after breakfast, same chest heaviness and then dull pain. Pain, chest center, come for 2 seconds and then goes away for 60 seconds. Pain not aggravated when deep breathing.