Unexplained GI distress and abdominal pain

Hi all,

I'm writing because I'm out of ideas and would like some help. In the past two-ish years, I've struggled with abdominal pain. After three ER visits, a same day, and a follow up, I'm not sure what to do. When I went in to see an internal medicine specialist for a follow up (my PCP was booked), she told me that my bowels sound like an 80 year olds (Im 32). I drink 100+ oz of water a day, when I take fiber supplements it makes the constipation way worse, I take 2 caps of miralax daily (it doesnt always help). Ive had 2 CT scans, ultrasoumds, xrays, an endoscopy, HIDA scans, pelvic floor dysfunction testing, endoscopy, and colonoscopies ×2.

For the past few weeks I've had blood with every stool. I've tried to manage hemorrhoids, but short of having watery stools I don't know what to do. I have many medical diagnoses that complicate this issue. I've posted here instead of GI because Im partly convinced that i have an undiagnosed autoimmune disease that I haven't seen.

My diagnoses: Charcot-Marie-Tooth type 1c/peripheral neuropathy, Fibromyalgia, chronic fatigue, Mast Cell Activation Syndrome, POTS/autonomic neuropathy, Endometriosis, Hypothyroidism, Ehlers-Danlos Syndrome (hEDS), pelvic floor dysfunction, anxiety, depression, adhd, ptsd, sleep apnea, low libido, nightmares, periodic leg movement disorder, chronic constipation, hemorrhoids (due to constipation), TBI x 2 in last 15 years,

The constipation started in 2013 when I turned 20 and has been chronic since. Upping my levothyroxine tended to help the constipation slighly, but i still feel exhausted a lot.

Any help, advice, or recommendations are highly appreciated. I'm sick of feeling full of shit, literally.