Sleep disorder? So far no correct diagnosis

I was in 100 percent good health until I got a cold about 13 years ago. I woke up the next morning with my ears ringing like crazy and feeling just out of it. When cold went away the symptoms left. 2 months later I got another head cold and the symptoms returned and never left. Gradually I began to get very fatigued and after all the years had to retire from a 20 year job as am constantly foggy and fatigued.

Once in a rare while I wake up with symptoms but go back to sleep and after a couple more hours sleep finally wake up with almost no symptoms so its been assumed this is a sleep disorder.

I have had 5 sleep studies, one said there was breathing disorder, but other studies said only mild and last one said no apneas. I do however have multiple mini wakeups and they don't now why. Ambien, Lunesta, antidepressants all tried, and in fact all make symptoms considerably worse the next day.

The final diagnosis was the disease is of unknown etiology and the only test I have had that is abnormal is a very high ANA value.

I still feel this must be cause by sleep disorder, if not why on some occasions when I go back to sleep again and wake up do I feel better. Also on those rare good days I have woken after sleeping on stomach with arms underneath me and I feel much better. As an experiment I did try a CPAP it changed nothing and they say I do not have apnea now..

In real need of help here, I continue to worsen.