Thrush is a fungal infection that babies often get on their genitals and in their mouths.It can cause problem to mother also during breast feeding.If your baby has thrush you’ll notice white spots in their mouth. If you think you or your baby has thrush, consult your doctor. They may prescribe an oral fungal cream for your baby. Mum and baby need to be treated at the same time to prevent re-infection. You can still carry on breastfeeding, though it may be a little sore!