Thanks for query,
it seems that you have got Fibromyalgia
There is no specific reason and treatment.
go for blood sugar,
If you are over weight,reduce the weight.
as and when require.
Important is physio therapy.
Go for exercise gradually,stating with slow and gradually increase.
Avoid sour thing in diet.
Take Vit A,D.
Take green veges,fruits.
As all reports are normal ,nothing to worry.
Ok and bye.