Swollen and burning nipples

I delivered 3 and half weeks back. And i am breastfeeding. The area around my nipple tips is swollen and tender and it has burning like sensation, which increases alot after feeding session, like the nipples are on fire. ( for past few days) The latch is not the reason as i had an appointment few days back with feeding team and they said baby is latching good.

Any idea what it could be?