I assume your GI specialists have already ruled out Irritable Bowel Syndrome which can come as a sidekick to Fibro.
Check out the symptoms of Interstitial Cystitis which sometimes comes as a Fibro bonus. Confirmation would be through a Urologist. Last year I had bad abdominal/ pelvic pain (band-like) especially at night. There was some urinary retention with burning sometimes. A diet change and a supplement has kept it under control.
Good luck on your quest!🤔

I am so sorry you are going through this! You're definitely not alone; I'm sure you know that people with fibromyalgia suffer from this in high numbers. Along with your specialists are you able to work with a pelvic floor therapist?

https://www.pelvicrehabilitation.com/services/p...

KelliLynn, I would google it. A lot of helpful info. You poor dear. Maybe xrays .

Hey Ann, I've never had anyone mention a pelvis floor therapist. Thank you for the idea! I'll have to look into this

Hey Margaret, i have had a ct done and there were no fibroids, no cysts, nothing abnormal. I know that with our bodies, it usually isn't multiple issues but rather one issue that encompasses everything. But this is one time i really feel like the bowel issues were a separate issue from this, and i think this is honestly interstitial cystitis. Just had an oh moment because my trigger for this past flare was so clearly recognizable on Friday evening. Just don't want to get my hopes up for an answer yet