J.T.
My daughter was extremely constipated for months she would scream and cry every time she had to poo. Her doctor said she justed needed more water and to give her glycerin suppositories when it got really bad. But her diapers were always very wet and I didn't want to give her drugs. So we took her completely off dairy. Soy milk, cheese, yogurt nothing with dairy. The results were amazing! We have not had a problem in over a year (she is now 2.5). She is back now on regular cheese and yogurt but regular milk binds her right back up. Also we have found blueberries to be a natural laxative.
Good Luck