I'm Considering Stem Cell Treatment. I Had Cryptogenic Organizing Pneumonia

I'm considering stem cell treatment. I had cryptogenic organizing pneumonia six years ago, was in ICU for 3 months and came home with scarred lungs. I have been healthy since that time but am on oxygen, 24/7 at 4 LPM. I go to the gym three days a week so I'm maintaining the same weight. Do you have an opinion about stem cell treatment. The facility I'm considering uses your own stem cells which are extracted from your blood and reintroduced through an IV.