My pulmonary Function test I had done August 24th 2017 was normal my Dr. just called minutes ago which is good news but Why am I so tired at night and having problems with my Breathing at times I question that and thought they'd tell me I have to have a sleep study done to see if I have sleep apnea but to my surprise they didn't say anything about having to have that done. My Question is do I get a second opinion or just go with it that everything was Normal?