Is Cymbalta the only med you have tried so far?
If it doesn't work try another med, if MD doesn't want to help you that way then time for a new dr...
and look into alternative therapies if you can.. like -
TENS, IF stim, low level laser, acupuncture, possibly chiropractic if misalignments are a possibility.

Most have to look into maximizing nutrition, reducing / stopping poor health choices or habits.
Sometimes supplements can be helpful.

Be sure to check out the sticky threads at top of the PN main page.