Thank you for your comments!
Yeah, to watch tv was very bad advice. For the last two years I've been wondering so many times what would have happened if I wouldn't have started my concussion with watching tv. But it's kind of pointless. I think the hospital just had bad routines and that the nightshift of nurses started working in the time between my faint and me watching tv.
I've probably tried to toughing it out at times, but it's also been a lot about finding the balance between my aspie head, that needs distraction and order, and my concussed head that needs resting. And of course the feeling of responsibility and expectations.
I'm seeing my doctor tomorrow, so will definitely talk with her about sleep apnea and breathing! Thank you for all the information!

I wonder, do you breathe automatically now? And is it true that sleeping on the side is better than sleeping on the back? I usually find it easier to breath when on my back.
I had a small nose operation three years ago, because my nasal Conchas were too big, but I never had a check up afterwards. Maybe that's a good place to start, while I wait for whatever my doctor will refer me to.
I found some horror stories while googeling, yes. Hua! I won't give up after the "your sleep is just restless because you go to sleep to late"-answer this time. Luckily I've stopped going to doctors alone and my boyfriend is very persistent, so I think it will be okay.