Extremely low blood pressure can develop in seconds (as with bleeding from trauma), in minutes (as with a peanut allergy), or over the course of hours (as with a worsening infection, such as toxic shock syndrome).
Eventually the contents start backing up.â. Here are the most common bowel obstruction symptoms: 1  Distended (swollen or bloated) abdomen. 2  Nausea. 3  Vomiting â color and texture of vomit may help diagnose the obstruction. 4  Change in bowel habits. 5  Constipation. 6  Very thin stools. 7  Blood in the stool, especially likely if cancer is a cause.
However, if you have at least two of the following symptoms for at least three of the past six months, then you probably have constipation: 1  Hard or dry stools. 2  Fewer than three bowel movements per week. 3  Straining excessively during bowel movements.  Having a feeling of incomplete evacuation after a bowel 1  movement. Having a feeling of rectal blockage.