Hi I am suffering from ILD from last 4 years. I had my biopsy in 2014 after my biopsy I feel better I was able to walk without oxygen, do my daily work routine without any difficulty. But last year I got admitted to the hospital in the month of July and from than onwards I am on Oxygen for 24 hrs. And I am not able to sit without oxygen for more than 15 mins. My nails got blue and my O2 level goes down.