Sounds like IBS --
You may have Irritable Bowel Syndrome if you are experiencing any of these symptoms:

* A recurring change in bowel movements that can alternate between chronic constipation and bouts of diarrhea
* Fatigue
* Headache
* Nausea
* Painful bloating
* Flatulence/gas
* Abdominal discomfort, usually in the lower abdominal area

Diagnosis
Irritable Bowel Syndrome is diagnosed based on these criteria:

* Abdominal pain or discomfort that lasts for at least 12 weeks out of the previous 12 months.
* Pain is relieved by having a bowel movement.
* When the pain starts, there is a change in the frequency of bowel movements or a change in the form of the stool.