The second and third ribs in the left chest hurt, coughing and exertion. I don't know why. Are you hurt? How to treat

Hello, the second and third ribs in the left chest under the clavicle are painful when coughing, which means respiratory muscle strain. It is recommended to go to a regular hospital for ECG and X-ray photography (chest position and lateral position) to rule out the parenchymal lesions. If there is no positive finding, it is confirmed that it is respiratory muscle strain. If it is not treated for a period of time, it will heal itself without entanglement.