Erika,
I have not been on Cymbalta. I did ask for it but was given nortriptyline instead. It works great as an add on for TN for me at 40 mg HS. The only SE was vivid dreams- in a good way- I looked forward to them! By the 3rd or 4th night they stopped.
As to the walnut size lump on your spine- I am glad there is a quick plan to biopsy that. I am thinking of you and praying that all will be well.
Best to you,
ANN