I'm thinking that this is most likely C. difficile. This normally happens in the colon; hence it's true name - C. difficile colitis. Some antibiotics are well-known for causing this while others don't. Another interesting thing is that people with UC or Crohn's have been known to develop it without taking antibiotics.
Sometimes if you stop taking what caused it, it will clear up on its own. Otherwise we treat our patients with metronidazole (Flagyl) or vancomycin (Vancocin) when they get this.
Hope you feel better soon!
Breast Cancer at 36. Diagnosed in 2000. Bilateral mastectomy with reconstruction.
Sub-Total colectomy in September 2007 for colonic inertia.
Son diagnosed with Crohn's at 17 (now 21). Taking Asacol and 6MP with Prednisone and Rowasa added during flareups.
Husband HLA B27 postive with ankylosing spondylitis and psoriatic arthritis.