Medic, I am really impressed with the way you are approaching the challenges you have right now in your life. I do believe that doors will open for you as you continue to feel better and you'll see a good path for the future.
You mentioned that you had never had a sleep study. You know, you might try having a good one done. They check for many things and not just sleep apnea. I had one back when I was having irregular heart beats. They wired my head up along with the rest of my body and some guy in a room watched all those electrical signals as I slept. There were some 800 pages of reports generated that were analyzed. Everyone expected me to have sleep apnea, but I didn't. What I did have was a lot of irregular heart episodes during the night and pretty severe restless legs. This was disturbing my deep sleep big time. I would have never known this had I not had the study done.
I will also leap on the positive about you considering going back for your nursing degree. There are jobs for nurses that don't involve hours running around in a hospital. It's pretty obvious that you would flourish in any job where you could see that you're helping people.
Just a thought too, that as your time would permit, you could spend time here on BoneSmart helping our members. I must say it has proven to be a VERY rewarding thing for me. We would certainly welcome your increased participation.