I have COPD stage 4 and I am having low grade (like 2 degrees) temps off and on for the last 2 weeks. When I do have the temp I feel a bit run down. I guess my question is, are these low grade temps relatively normal with stage 4 COPD? I'm on oxygen 24/7, have been for the last 3 years since they said I was stage 4, now at 4 liters per. I still don't know all of the little surprises this COPD brings with it.