agree with greg another thing to try would be a
enema, if that doesnt work ask your doctor if it would be safe
for you to drink a bottle of magnesium citrate its what they have most people buy ( its cheap like 2 dollers over the counter) to drink before surgery it wil definatley clean out your intestines,,,if all this doesnt work you may have a fecal impaction , which does require medical care, usually a didgital manipulation of the stool to get things started.