Sounds like you had some serious work done. I crashed a few years ago and collapsed a lung. Went to the ER, they shot an xray, saw some broken ribs, gave be a pain med prescription, and sent me home, with instructions to come back in the morning for a repeat chest xray. The repeat xray showed my right lung had partially collapsed overnight, so they put in a chest tube, hooked up a Heimlich valve and sent me home again. Came back a week later and had the chest tube removed. I was back on a bike in another week, but the cracked ribs kept me from doing anything too vigorous.