Hi everyone. I've been using the CPAP machine, with oxygen attached, for just over a week. So far so good. I have breathlessness and I'm awaiting pulmonary testing. However, I've noticed my daytime breathlessness is now much worse, so much so, that I cannot even walk a few steps without becoming severely breathless. Initially I was so pleased with the machine because I awoke with a little more energy than before. The problem seems to be getting worse each day. When I am on the CPAP I did notice that the air seemed a bit fierce, but after a while I seem to get used to it. I just wonder if anyone else has the same problem? Thanks.