I Am A 59 Year Old Female. I Have Been

I am a 59 year old female. I have been suffering from EXTREME exhaustion...I mean to the point I just cry when I think of having to get ready for church, play with my precious grandbabies, or to visit a friend(which I now never do anymore). I had blood work 2 weeks ago, my thyroid meds. my doctors tells me are on the money. I do have sleep apnea, which I use my CPAP faithfully. I was told last week I do have mild COPD. With this being said, why am I SEVERLY EXHAUSTED? I feel I have no quality of life. So many people have looked at me lately and said, I want to see the old Donna (me), the one that smiled and laughed all the time...HELP