What exactly did you endoscope report say? I feel like I may be in the same boat as you. I supped all kinds of shit for two years, woke up one day feeling weak and shitty developed abdominal pain a week later, and haven't felt the same since. In the mean time I've had headaches, muscle aches, long bone aches, sensitivity to light, pain in neck, dermatitis and worse dandruff, and a weird tingle/itchy feeling all come and ago. I've had an ab/pelv CT, endoscope, 3 CBCs and CMPs. Been tested for mono, lyme, strep, flu strains, corona and the only thing any test has ever said was that I had redness in the antrum of my stomach.
It's been 9 months and its completely killed my quality of life and ruined every bit of progress I made physically and socially in 2019.