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 problems include abdominal pain and spasms, gas, bloating, inability to defecate or pass gas, rectal bleeding, loose and watery stools, constipation, diarrhea, vomiting, and weight loss.