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).
Some common bowel problems people may have are: 1  Gas or bloating. 2  A feeling that your bowel is not quite empty after a bowel action. 3  Constipation. Urgency (the feeling that you may not get to the toilet in time) 4  Diarrhoea. Leakage from the back passage (faecal incontinence).