I'm experiencing some pain in the area inside my ribs on both sides, especially under my left breast and there's some noticeable swelling too. It's been going on for a few days now. My breathing is generally normal, but sometimes it feels like I have to make an effort to take deeper breaths. I'm getting a bit worried about what might be causing this. Could you provide some advice on what might be happening?

Ecg and x-ray chest is advised to the patient.