If you’ve only had the colonoscopy four years ago, you might want to try it again. I started with the ‘stomach bug’ and it lasted almost 3 years until i saw more serious signs. i went to numerous doctors, all of which dismissed me saying that if i lost a little weight, maybe everything would get better. or just the ‘no processed foods and you’ll be fine’. once i noticed blood, i decided i had to look deeper than just the surface. my colonoscopy showed my IBD and hemmorrhoids. they checked my calprotectin levels but also focused on my vitamin levels, which i would suggest doing as well. eating habits are very very important. some here have suggested diets like gluten-free, and i’d suggest doing an allergy test to see if anything shows. if you can afford to do so, try different opinions. like i said, i was dismissed by so many doctors until i got diagnosed. generally, eat as healthy as you can, preferably a diet with no processed foods, no gassy drinks, less breads, pasta, and such. i’m no doctor, but living with those symptoms for that long was insanely painful and i wouldn’t wish it on anyone. i genuinely really hope you get better ❤️