Pump flanges

Shelby • Mama to Teagan (11/4/19) , Callum (7/10/21) and fur mama to Hoover! 🥰🥰🥰

Will it benefit me at all to try to measure my nipples now to see if the standard flange size I received with my pump will work? Or to potentially buy new sized flanges? Or are my nipples going to be way different after birth? Currently almost 32w pregnant