Got lap appendectomy 9 months ago, had diarrhea for 7 days with intense pain in my bowel before and when i fart and diarrhea. okay ?

Antibiotics: The antibiotics used to treat appendicitis, or any infection in fact, can cause diarrhea. The antibiotic kills helpful bacteria in the GI tract, allowing some bad bacteria to multiply and cause symptoms. This is unusual 9 months later, usually occurs right away if its going to happen. You need to take a "probiotic" which you can get at a drugstore, or get "live culture" yogurt from grocery store.