Bruise. Could be.
Had piece of metal jabbed into sternum 36h ago. Severe pain while laying down mostly. Didnt break skin. Small yellowing bruise now. No ins. Advice?
Blunt chest injury. Blunt chest injury can bruise the soft organs within yourchest particularly the lungs and heart. I'd you are having difficulty breathing or having more chest pain than just the site of the injury, you should get checked out.