I have had your symptoms and have been told the same thing about not having sleep apnea, and I do not think dreams are the only possible factor here (if even a factor at all) since I have always dreamed a lot and the symptoms you have mentioned are not always present. Continuing to address all the various physical, emotional and mental issues (troubles or disturbances) I have is what makes the difference for me...and that is really about all I can say because I have never figured out any direct connection with anything.