I raced St. Anthony's yesterday and within the first few swim strokes I take a foot or elbow right to the left chest. I could feel it throughout the race but it didn't really play a factor into my overall time. I could still swim fine, ride normal and run without any pain. But when I finished, my chest started hurting. It hurt to breathe for a little but - I couldn't take any deep breaths really. After a little while, it was a little better. It's pain on the left side of my chest and hurts to take in a deep breath still, it hurts to bend over or pick myself up out of bed. The pain is sometimes just an acute sharp pain right in the middle of the left chest, but sometimes can encompass the entire thing. It's sore to lift my left arm as well. My wife is a nurse so she was concerned about my heart or even having a heart attack - especially since I've already had a stroke 2 years ago when I was 25 (only 160lbs). My thought is just a bruised sternum or pectoral muscle but not sure. All I know is it hurts like a motherf***er half the time.