well first of your doctor must rule out other diseases, fatigue and pain can be symptoms of a lot of other conditions. An example would be Lyme disease. It can cause bith symptoms you describe.
SO really you need to find a good doctor.
best of luck,
Chronic Lyme Disease,Fibromyalgia, CFS, PCOS, sleep apnea, hypothyroidism, type 2 diabetes, bulging discs to name a few