Hi
Welcome to the MedHelp forum!
Even though Campylobacter jejuni infection is self limiting, get your stool examined for this infection, along with other parasitic infections like ameobiasis or giardiasis. If this is ruled out then log in food intake to see if there is a connection between what you eat and the symptoms. Consult a gastroenterologist to rule out celiac, Crohn’s, IBS etc. Get liver, gall bladder and pancreatic function assessed.
Since I cannot examine you and know other related conditions you may be having, nor is a detailed history possible on net, I have listed the various possibilities that should be looked into. Please consult your PCP for primary examination followed by proper referral.
Take care!
Have you been checked for IBS?