Welcome. Sorry to hear about your difficulties.
There is an Irritable Bowel forum on this site, too. Perhaps you can check in with that forum and see if there is any guidance from others with this problem. (My daughter has IBS).
I had been on Cymbalta at one time, in the hopes that it would help my chronic pain as well as my depression. Sadly, the side effects were an issue for me. I did not experience the brain zaps, thank goodness.
I've been managing (mostly well) without meds for a few years now, but would go back on 'something' if I'm too far into the 'black hole' again. The first med I had ever been on was Paxil and it was a huge help. Until the side effects. Then we tried Cymbalta when it came out. Again, a huge help, until the side effects. Both gave me Vertigo. Waah!
Meanwhile, I've had to learn other ways to help me. Meditations, music, gardening (indoors and out), my pets, coming here, dark chocolate, etc. have all helped, most of the time.
Please keep posting and let us know how things are going. I hope the best for you.
multiple surgeries for rotator cuff both shoulders with residual chronic impingement syndrome, ulnar nerve transposition, carpal tunnel release, wrist ganglionectomies/denervectomies/tenolysis, multiple herniated discs, tarlov cyst, whiplash, bursitis of hips, tendonitis, torus, 3rd degree shoulder separation, torn labrum, ovarian cysts, fibroid tumors of the uterus