Thanks so much for the replies!! @flib, I think you're right, long lungs is probably not a compliment, but it did make me laugh. Sounds like sticking with the 3% is probably good for me. I haven't posted here much, but I want to say what a great place it is to come and gather encouragement and information. I am very embarrassed to say I struggle with health anxiety, and coughing up blood just sends me into that fear – even though I know it is just sometimes a symptom of my MAC, I can't seem to make my anxiety fully accept that. Same way with the fatigue sometimes, I'll think something else must be horribly wrong and I'm dying and then later in that same day I can feel better, get up and accomplish things and decide I'm probably not dying after all. What a hot mess!!!