Hi. I was exactly the same. I was literally waking in the night choking on this acid. I knew it had gotten in my lungs as I had to get up and walk around coughing it up. I could literally hear it rattle in my chest! Thinking it was just indigestion I started eating my last daily meal at 4 pm. I'd take an antacid before bed but it was usually ineffective. Then in August I was rushed to hospital and put in ICU for 5 days with "pneumonia" although in the day and hours proceeding this i was doing my usual housework, errands, and had energy. I just suddenly lost all air and i dropped. 2 weeks after being sent home i collapsed again, this time with suspected sepsis and needed intubation/life support. I'd never heard of COP until I saw this post! I've had ct scans, a bronchoscopy which showed nothing significant but ground glass opacities. I told the doctors about the GERD and choking on this horrid acid at nights but no one is saying oh maybe that's worth a check! They just gave me GERD meds and are saying severe pneumonia. Yet I had no pneumonia symptoms and a normal white cell count. No cough, no mucus, no fever, no chills, no trouble breathing until I literally collapsed. The 2nd time was different due to lower 02, dry cough then the rest that accompanies sepsis. That was 3 months ago. I'm on no 02 and no meds. But building strength back up after body deconditioned. Can you still work? What are your symptoms now? Hugs to you and thank you!