Why does the stem of my cup seem to protrude?

Why does the stem of my cup seem to protrude?

 

Due to the reasons listed above, each woman may find that their cup sits differently when inserted (either higher or lower). This is normal and the cup is designed so that the stem may be trimmed if necessary. It is important to remember that no part of the stem should protrude from the vagina as this will cause discomfort with your labia. While your cup is removed, cut about a centimeter of the stem at a time, re-insert and wear for an hour at a time until you’ve found the length comfortable for you.