If the baby is otherwise well and growing and this is a good experience for the mother and baby, why stop and why do tests? In my experience, we rarely find an answer for the blood in the stool, and the baby does go through a lot of unnecessary testing without us ever finding an answer. I would wait and do nothing. I would not stop breastfeeding, and I would not do any tests unless there were a definite change for the worse. Jack Newman, MD, FRCPC