Health Conditions that Cause Mucus in Stool. A sudden onset of mucus in the stool, accompanied by urgent diarrhea, cramping, fever, and blood in the stool may be indicative of a bacterial infection. If you are having any of these symptoms, contact your physician immediately.
Atelectasis, or localized obstruction of the lungs that may result from mucus plug obstruction, can occur resulting to the collapse of a portion of the lungs. This is enumerated by the study published by Respiratory Care in September 2007.
As the woman gets closer to labor, the mucus plug discharges as the cervix begins to dilate. The plug may come out as a plug, a lump, or simply as increased vaginal discharge over several days. The mucus may be tinged with brown, pink, or red blood, which is why the event is sometimes referred to as bloody show. Loss of the mucus plug by no means implies that delivery or labor is imminent.