Deflated lung

Oh, and I have a pain in my back under my right shoulder blade. The pain started this morning and I figured it is from sitting crooked or running. But after getting back from the gym and taking a few deep breaths. I realized that it is my lung. I probably deflated it cycling last Thursday or during my run yesterday. This triathlon might be the death of me. But I can complain all I want because I'm registered and can't back out.