A bowel infection caused by Clostridium deficiele is called " pseudo-membranous colitis ". Pseudo-membranous colitis usually occurs after long term usage of large-spectral antibiotics like Augmentin ( amoxicillin + clavulonic acid ). Large-spectral antibiotics kill sensitive saprophytic bacteria in the bowels allowing only the resistant species such as Clostridium deficiele to remain in the intestines. Clostridium deficiele is an anaerobic bacterium that does not cause intestinal infections under normal conditions because other saprophytic bacteria in the bowels prevent it from happening. Pseudo-membranous colitis could be a life threatening condition if not treated with proper antibiotics. For example, Flagyl (metronidazole) is used for treating anaerobic infections including Clostridium deficiele. You can consult an infectologist about this condition for a proper diagnosis and treatment