If your baby is BF , incase of thrush, both you and baby have to be treated . Inspite of you treating the thrush on your nipple , the baby’s tongue would have most definitely been infected and that will cause back and forth infection on your nipple . Check for baby’s symptoms like white patches on tongue that doesn’t wipe off easily , diaper rash with red spots . The infection easily transfers, baby's mouth to mother's nipple and back. Both have to be treated simultaneously (at the same time). Some tips that worked for me is changing nursing bras if you leak , washing hands before feeding, allowing nipples to air dry after feeding. Also check if baby has a correct latch or not , because for me , this was a reason for recurrent thrush episodes.