You've received some excellent advice regarding treating your feeling of incomplete evacuation of your bowels. There are a number of anatomical concerns that only a GI specialist would be able to help you identify. Since you did not give your gender or age, older women who have given birth can oftentimes develop severely decreased pelvic muscle function. This increases the risk for the bodies inability to "push" the stool out. Also, another member recommended Metamucil to bulk up the stool. Metamucil is a soluble fiber that absorbs water into the stool making it more slippery, and by doing that, makes it easier to pass through the colon and rectum. Of course, when adding fiber it is just as important to drink a lot of water throughout the day. Not drinking enough water when taking Metamucil can cause constipation as well. If this issue is interfering with your quality of life, then I would advise seeking professional advice.