Had a stomach illness 2 yrs ago in honduras, and every time i eat rich or heavy food (cheese, fatty), i get diarrhea and even mucus for 2-3 days. ibs?

Likely: Post inflammatory IBS with symptoms that may last indefinitely which is otherwise poorly understood. It seems that in your case it recurs with heavy fatty loads, overlapping symptoms common in gallbladder dysfunction and pancreatic insufficiency. Would suggest reducing at a minimum, specifically fatty intake in trying to find a threshold in the amount that will still be tolerated OK.