Talk to Pediatric Gastroenterologist on Bloody Stool

my baby is 8 months old and from past 17 day my baby has blood in stool she has diarrhea for 1 week and now she has no diarrhea but there is blood in every stool she pass and has blood when no stool is pass. we consult 2 different child specialist and they have antibiotics which we gave regularly to baby but there is no improvement pls help what is this problem i m really worried.