That is the problem with symptoms in general. Most people who go to the hospital with "chest pain" are not having a heart attack - but it is still the best symptom we have and so emergency rooms "waste" a lot of time one people who have nothing wrong. Or more likely they just have a mild constipation case (look up constipation, and then look up the individual symptoms - most of them are also symptoms of GET TO THE ER NOW type things)