Have you been tested for sleep apnea? Anemia?
GERD can sometimes be an indication of food intolerance. Celiac/Gluten Intolerance is a common cause of GERD and sleep issues. I'd encourage you to get tested for food allergies and gluten intolerance.
Also, sugar causes a high, followed by a crash in energy. If constant sugar is eaten, the body is always in a crash state. Some people need to reduce sugar intake or limit sugar to only once in a while to feel more normal.
And finally, there are conditions of imbalanced hormones that can have fatigue as a major symptom. Hippimom gave you some good advice. You may also find Naturopathic Medicine or Acupuncture helpful.
Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication Allergies, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD (Lupus?), Osteoporosis, Anemia, Very Low Lymphocyte Counts (T-Cells & B-Cells), malabsorption/malnutrition, possible Lyme Disease (Igenex Lab IgM WesternBlot positive), etc.
Meds: Pulmicort, MaxAir, Injectable Vitamin B12, Herbs, Nutritional Supplements, Essential Oils, Homeopathy.