Colon pain and rarely mucus and blood.

Hello! I don't really know how to introduce myself, but I live in Latin America. I have experienced colon pain and sometimes can hurt really bad for some reason. The first time I experience this was like 3 or 4 years ago. I got an abdominal echo (nothing was found) and the doctor touch me and press on the colon area and he said he didn't feel anything weird  but an inflammation and he told me to take levosulpiride half and hour before meals. In September last year I got mucus and the blood in my feces for the first time. I got checked with some blood and feces test and everything looked relatively normal except for the white blood cells levels (if I remember correctly) then I took probiotics and I think a pill that was and only dose but I don't remember for what. Know my situation in similar to last year's, I got blood in my feces only once,  then constipation, after that I took probiotics and back to normal but know I have diarrhea with mucus I got a little of blood in the mucus again