There can be a variety of reasons for the change in bowel habits, including, infection, malabsorption or inflammatory bowel disease.
I would suggest sending the stool off for culture and analysis, to ensure there is no infection. Blood tests should also be considered to exclude celiac disease.
If the symptoms continue, an endoscopy, either a colonoscopy or flexible sigmoidoscopy, can be performed to exclude inflammatory bowel disease.
A GI referral would be reasonable to discuss these options.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin Pho, M.D.
it might be the high fiber cerial! i have UC i had my colon removed yrs ago, now if i eat high fiber its suppose to bulk up my stools cuz i have an internal pouch that acts as a colon, but no actual colon any more. but for some one with a regualr colon, Naturally i beliee fiber is suppose to make you go to bathroom more or like more liquidy stools. maybe this helps some?