question: My husband started feeling pain in the right side of his chest right below is pectoral muscle. He doesn't recall doing anything that could have caused a cracked or broken rib. It hurts him to take deep breaths, put pressure on the area, and when he lays down it hurts to sit up or turn to the side. And it got worse after he sneezed. There is a faint bruising, but doesn't look swollen. What could it be?