Hi, Welcome to Health care magic forum.
Cymbalta is not a treatment,and is not good for long term use. You can use it till the diagnosis is established.It may be the
fibromyalgia, defeciency of vitaminD,calcium,or electrolytes.
I advise you to consult an orthopedic surgeon for diagnosis and treatment.
I usually prescribe to my patient with such symptoms neurotropic injections for 10 consecutive days,and then periodically,calcium suppliments, and pain killers.
Avoid taking potato, other tubers,tomato,egg, chicken,and and sea foods.
Wishing for a quick and complete recovery. Thank you.