Hi. Thanks for elucidate history. Appendectomy done and you start getting pain and now night sweats, and there is also a possibility of colitis so the antibiotics is changed and added a Probiotic. I would advise you the following. Review Hb and WBC count- if increasing, I have a reason to re-explore. Also get liver, kidney functions to see there is no bad affect on these organs due to septicemia. Ultrasonographyu and / or CT scan of the abdomen to see if there is collection of pus pockets, if so and responding to the routine medical treatment, I would put you on intravenous antibiotics and iv fluids, And go for exploration to see and evacuate the pus and lavage the peritoneal cavity and put a drain. Daily review till you are absolutely normal. This is the treatment of peritonitis after perforation of the appendix and surgery thereupon.