I have struggled with thrush whilst breastfeeding, finally got rid of it after months with lots of drugs only for it to reappear. Decided to go to formula, but want to breastfeed at least once a day to keep up baby's immunity. I'm fed up with appling creams to nipples, gels into babys mouth etc, its been going on for so long and they don't work for me. Question is, will it harm me or baby to carry on feeding with thrush and not treating it.