Bacterial and parasitic infections can cause sudden onset diarrhea,
mucus and blood in stools, lower abdominal
pain and urgency. A fever or illness with red, bloody stools may be a sign of few serious conditions like an inflammatory bowel disease, such as Crohn's disease, ulcerative colitis, and dysentery. Conditions like inflammatory bowel diseases and infected ulcers can produce mucus or pus in the intestines. I will advise you to consult a local health care provider for your symptoms.