I am a 27 year old male and I have been suffering from chronic fatigue for around eight years. I have went to multiple doctors throughout these years and have basically been turned away since I am young, relatively healthy, and at a decent weight. I have always been very tired, regardless of the amount of sleep I get. Driving is very tiring and always a struggle. In past years, I would be able to last about three or four hours driving before I would be unable to stay awake and would have to stop or turn over driving to my wife. My symptoms have been getting much worse. I am now getting to the point when I can barely stay awake at work unless I am working on something incredibly mentally stimulating. I only have a 15 minute drive to work, but have caught myself in the past couple months drifting off at stop lights. I've started to gain more weight in the past year since I have practically no energy at the end of the day. I allow myself plenty of sleep at night. I'm very lucky to have a job that allows me to be flexible with my hours. I typically sleep eight hours at night but still wake up exhausted and end up taking at least an hour to get out of bed. My sex drive is virtually non-existent. The wife and I only this sort of fun every couple months.
I've finally found a doctor in the past two years that has taken interest in my symptoms. First she thought it could be depression and anxiety, but the medication only made my fatigue much worse. She moved me to Wellbutrin which helped, but left me more anxiously stimulated and scatterbrained depending on how rested I felt. She tested my thyroid later and found that I was slightly hypo. She also tested my testosterone and found that it was at a low level for my range, but still in range (320 ng/dL). My B12 was fine, Vitamin D was slow. I have been medicating my Vit D and Hypothyroidism for about a year and a half.
In the past five months, I have grown much more tired, to the point of feeling exhausted all day no matter how many hours I sleep (sleeping 8-10 hours a night). New bloodtests showed that my thyroid levels are in an ok range, but my testosterone has dropped to 195 ng/dL, which is out of range. To make a long story short, other blood tests do not point to primary hypogonadism, so I have an MRI and many other blood tests scheduled for the first week on January.
My doctor did schedule me a sleep study last year, but I ended up cancelling the appointment because of budgetary reasons and since the Wellbutrin seemed to help me feel more awake. My wife also reports that I never toss and turn and that I rarely snore, unless I have drank. The doctor did question again last week about my sleep, thinking it may be a cause for my testosterone levels.
I got a fitbit earlier this year, and I've noticed some interesting graphs for heart rate at night. I bought a CMS50F last week in the hopes that maybe it will point to a sleep issue that would in turn cause my testosterone and tiredness. I would really appreciate it if any one here would take a quick look at my results. These are both from last night. I have visiting family and did not get as much sleep as normal (stayed up watching NetFlix ), but I recorded the questionable heart rate on both the FitBit and CMS50F last night.
Sp02 Assistant:

Sleepyhead:

Fitbit Heart:

Fitbit Sleep:

Sorry for the long, drawn out post, but i'm really at a loss. If the MRI and additional blood test do not show up anything, I plan on scheduling another sleep study. Please let me know if you see anything questionable in my results. I do not see any big drops in Sp02, but the events that are logged seem to correlate with the heart rate. I have assumed that these transitions in heart rate may be related to REM sleep, but I cannot find any other similar pictures of other peoples results that could explain this. I know, none of this can be concluded without a sleep study .
Thanks for any help you can provide.