Hello , my 7 month old baby's stool report has come twice positive for occult blood. When he is given antibiotic its comes negative, and once we stop, it is positive again. We even showed him to a pediatric gastroenterologist. He just asked us to switch to the isomil formula. He is not given cow milk ever. His report shows that reducing substance as negative. I m not able to understand what is happening to him and what should we do. Rellay worried. Any suggestions? What can we do or what can be the reason