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).
The symptoms of a bowel obstruction are. 1  Feeling bloated and full. 2  Pain (usually colicky tummy pain). 3  Feeling sick. 4  Vomiting large amounts (including undigested food or bowel fluid).
Symptoms of bowel cancer. The three main symptoms of bowel cancer are: persistent blood in the stools â that occurs for no obvious reason or is associated with a change in bowel habit. a persistent change in your bowel habit â which usually means going more often, with looser stools.