This is Dr. David
I would see your primary care doctor
ask for testing to check for viral infections like ebstein barr virus which can cause mononucleosis can cause long term fatigue.
you need to get thyroid, iron, ferritin, B12, vitamin D levels checked as well
you should get ANA, ESR, C reactive protein levels checked as well to check for inflammation in your body.
I would start there
let me know if you have other questions.
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