Breastfeeding pain - 9 months old

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Is it possible to have thrush on only one nipple?

For the pst few weeks I’ve had on and off nipple pain when my LO feeds on only my left nipple. I see it sort of sore when she unlatched, but no other visible signs other than that.

Could this be thrush? Or something else? No fevers. My breast itself doesn’t hurt.