Severe fatigue (elevated bilirubin and ferritin plus a highly reduced vitamin D3)

Dear Medical Doctor,

My medical question is about my chronic fatigue becoming really frustrating through the years so that I can hardly tolerate sleep times lower than 12 hrs, with the awake times of no energy.
I have met several MDs in neurology, oncology, internal medicine, and physical medicine areas.
I have got several blood and urine tests along with an MRI of brain and the whole spine, X-ray images of my back and neck, and a complete ultrasound imaging of my stomach.
Everything was apparently normal except a few items in my blood tests from which elevated ferritin and total bilirubin is worth mentioning together with a highly reduced vitamin D3 level. Could you please help me to find my disease? Are those abnormal results related  to any specific illness that causes a chronic severe fatigue?
By the way, some (blind) medications have been prescribed for me before (such as Zoloft, Clonazepam, Olanzapine, Depakine, etc.) with no clear effect on my problem (at best).
A recent complete answer of my blood and urine tests follow for your observation:

Personal Information:
Gender Male
Age 30
Hematology:
WBC 6.31 10^3/uL
WBC Differential (%)
Neutrophil 49.7
Lymphocyte 41.0
Monocyte 6.8
Eosinophil 2.2
Basoph 0.3
RBC 5.63 10^6/uL
Hemoglobin 15.4 g/dl
Hematocrit 43.9 %
MCV 78.0 fL
MCH 27.3 pg/cell
MCHC 35 g/dl
RDW–CV 12.7 %
Platelets 262.0 10^3/uL
PDW 11.1 %
MPV 9.6 fL
RBC Morphobgy:
Hypochrom +
Aniso. +
ESR (1hr) 3 mm
Urine Culture:
Color Yellow
Appearance Cloudy
Reaction PH 5.0
Specific Gravity 1.020
Protein Neg.
Glucose Neg.
WBC /hpf 1–2
RBC /hpf 0–1
Epithelial Cells Rare squamous
Casts /lpf None
Crystals Amorph.
Bacteria Few
Mucus Sl. Amount
Blood Biochemistry:
Glucose (Fasting) 90 mg/dl
Cholesterol 212 mg/dl
Triglyceride 143 mg/dl
High Density Lipoprotein 36 mg/dl
Low Density Lipoprotein 147 mg/dl
LDL/HDL 4.1 Ratio
Cholesterol/HDL 5.9 Ratio
Sodium 139 Meq/L
Potassium 4.57 Meq/L
Calcium 9.5 mg/dl
Phosphate 3.4 mg/dl
Bilirubin (Total) 2.70 mg/dl
Bilirubin (Direct) 0.50 mg/dl
Iron (Chem.method) 178 ug/dl
Immunoserology:
RA (Immnunoturbidimetric) 7.0 IU/ml
CRP (Immunoturbidimetric) Less than 2.0 mg/l
Hematology & Coagulation:
Glu.6.phos.dehyd. (G.6.P.D.) Normal
Special Biochemistry:
Ferritin (ECL) 384.5 ng/ml
Vitamin B12 (ECL) 362.7 pg/ml ECL
Folic Acid (ECL) 4.5 ng/ml ECL
25OH-Vit.D3 (EIA) 5.1 ng/ml

Thanks a lot for your help,

Mg72

[mg72]

Dear Butternut2

Thank you cordially for your kind advice. Your suggestions are really helpful and positive.
I will take them for sure.

Thanks again, and
Best Regards,

mg72

[mg72]

Dear Butternut2

Thank you cordially for your kind advice. Your suggestions are really helpful and positive.
I will take them for sure.

Thanks again, and
Best Regards,

mg72