Flying after Lung Collapses

Hi! I am currently 18 years old. When I was 15 my lung collapsed 3 times. The first one was a tension pneomothorax where my lung was 100% collapsed, and my heart had been pushed over. The other 2 were spontaneous. I had chest tubes for all 3, and I received VATS surgery and a Blebectomy. It is now 3 years later, and I am feeling really well. I occasionally get chest pain, but it goes away with some stretching. In a few days I will be going on a plane for the first time since surgery. I am starting to get a bit worried about flying due to the severity of my previous collapsed lungs. Is it safe for me to fly? Is there a chance that 3 years later my lung could collapse (even though it is surgically stuck to my chest cavity)? Thanks!