I bruised my ribs 4 days ago, thought they were healing a bit. tonight, all of a sudden, I have pain near my chest/lungs shallow breathing, sweating, cant lay down, and actually vomited. I felt better after vomiting, but some symptoms are still there. and now I notice a bruise on my side. still cant breathe deeply. I don t think it was a heart attack, but what could it be?