What causes pain?  What causes fatigue?  What causes tiredness?  Why isn't your doctor figuring this out?  How are you going to get cured if your doctor doesn't know?  
Pain is a sign of inflammation.  Inflammation is caused by tiredness.  Chronic inflammation causes fatigue and tiredness.  This means your circulation and immune system is damaged.
Chinese medicine has been used for thousands of years to eliminate pain, fatigue and tiredness.

https://rumble.com/v1530z9-cure-pain-fatigue-and-tiredness-with-chinese-medicine.html