I was exercising doing a chest fly and i felt a muscle under my arm and down the left side of my ribcage area grab. It felt fine the next day so I went golfing. Now I have pain in that area, at the bottom of my shoulder blade and in my pec muscle. Any advice?
Hello, It could be a sprain or tendon injury. As a first line management, you can take analgesics like paracetamol or diclofenac for pain relief.  If symptoms persist you can consult an orthopedic and plan for an MRI scan. Hope I have answered your query. Let me know if I can assist you further.