I am about to go in for my 3rd sleep study, in a few weeks. The others also did not reveal anything of note, but still the doctor wants to assess me again for sleep apnea. I am sleeping about 12 hours per night and feel very dragged out when I get up and often stay that way.
i recently read a book by Carlos Schenk called "Sleep" and there are a number of disorders, more than we in the public have even heard of that could be an issue for you. This is why it may be wise to have another sleep study done. I hope you can find some answers ....