Do I have elastic nipples? Wrong flange size? Please help lo

Which flange size fits me better? 13mm or 15 mm

Flange fit help? Went from 24mm to 19mm, still in so much pain.

Movement of nipple in Elvie stride flange...which is correct?

Flange sizing

Flange sizing

Flange fit help pls!

Can someone help me with flange size? I felt like 17mm was rubbing

Is my flange size too big or too small?

Help!! Flange sizing? I can’t figure it out (NSFW) nip pic

Help with flange fit please. Video

Flange fit