Thanks Purpley. Of course you are right - I need to advocate for myself. I will demand the sleep study, which I know I should have done long ago if only to rule out sleep disorders. I just seem to have lost all confidence in my own judgement - which is really not like me.
Unexplained symptoms and doctors that pooh-pooh them are a nasty combo. I've seen wonderful, highly competent people lose confidence in the face of that. It's normal because you're stuck trusting someone else who's supposed to be the "expert." Trust me, I know medicine, but I don't know cars. I hate taking the car in to be fixed because for all I know they're lying through their teeth about what I need. And if I were hearing some obnoxious sound from my car engine and took to it to five different mechanics and all of them told me it was running fine, you'd better believe that I'd start to wonder if the car was fine and I was just having auditory hallucinations!
So just go back in there imagining you have a big, tough crowd of NN members with you who have your back.