My baby is 2months old & she hast blackish-red threads in her nappy, though smell & consistency is normal to breastfeeding?

Bloody Stool: If this has occurred in 1 or 2 diapers and the baby is feeding well, I would not be concerned. If the red appearance persists and the baby is fussy, there is a possible milk allergy. If breastfeeding take yourself off of diary for 2-4 months. Generally the baby will out grow this at this age. If this does not work then take the baby into the doctor.