I had pneumonia resulting in respiratory failure and ARDS earlier this year. Since then my primary care has been resistant to me seeing a pulmonologist. So, I've been having strange O2 levels at times. When driving, reading, or anything where I'm relaxed my sats drop to 91-92. When I'm asleep they go down to the low 80's. As soon as I start to doze, my sats drop and pick up after a minute when I wake up.