Hello girls, did you have nipple discharge during breastfeeding? (slig…

Hello girls, did you have nipple discharge during breastfeeding? (slightly above the areola, top) Some places, it's been bothering me for two weeks now, but at first there was redness, now it's covered with a crusty feeling, what can I treat it with or who should I contact? It flowed a lot of milk and washed it off sometimes at night, maybe because of this I don't know.