>Already changed diet to have more fiber,
There´s your problem. Go Carnivore! Try it for 3 months and see the results!
Sorry to hear that! It healed my wife´s gut! Bacteria, look up CDS by Dr. Kalcker. Here is a short video what it is
https://rumble.com/v2enn32-what-is-cds-chorine-dioxide-the-scientific-facts-dr.-andreas-kalcker.html
Or maybe Dr. Baker could help you with something in his online clinic called revero?
I hope you will get better Anon!
https://www.revero.com/