question: Hello I have a 2 year old daughter that is always constipated her doctor has her on laxative she has time she can use the bathroom with no problem than she has time she can t and if she do it is very hard dark brown. Today she use the bathroom and the first half was light brown than the other half to me looked black but she had no pains. This is the first time she ever had two different color stool mix. What should I do I am very concern and scare