Stage 4, o2 24/7 21% lung capacity. I’m tired of explaining myself and how I’m feeling and that it’s just not me but all of us with COPD who are experiencing the same. Has anybody ever written a note to explain to family members what’s happening. I would like some way to show that I’m not the only one in this situation and that I’m not lazy, crazy or making it up. Maybe then they will understand.