Thank you that's helpful. Since this whole thing began in late Aug. I have still to see a pulmonologist. I cant get in until January 3. They are doing another ct scan but not until Dec 9 because they said a few months between scans is needed to see change. My resting sats are now 96 97. When I used to walk my sats would really drop. Now they go to about 93. Its after I sit down again is when they drop to 90, 91. And in about a minute they are back at 96. I'm following an anti inflammatory diet and losing weight healthfully. I'm feeling and breathing better and the doctors feel more and more this was a severely pneumonia that was not fully killed the first time so upon release from hospital the first time, the pneumonia returned with a vengeance and brought sepsis with it. So I was then on antibiotics for a month to kill this thing, IF that's indeed what it was. I'm moving more and going farther. Last time, minor movement sent my heart rate into the 140s. Now it's about 117 but I'm told its because of severe deconditioning and will improve. I'm hoping!!