y’all i need help w flange sizes!

i have flat nipples and when i went to the lactation consultant she did not state anything whatsoever on flange sizes, all she did was give me a size 24mm.

there’s literally nothing in the internet about flange sizes for flat nipples.

on these photos i’m wearing a 27mm & i don’t even know if they’re correct for my nipples.

this is my right breast ⬆️

my left breast ⬆️

i purchased a willow pump & i have to know before they ship it because they don’t do exchanges after the seal is broken. i measured my nipples they’re different sizes because one is longer

this is my right nipple ⬆️

left nipple ⬆️