How long should a pregnancy belly ring be?

Erin
I bought a pregnancy belly ring so I could keep my piercing, and I was kindof shocked at how LONG the plastic bar is. It says you can cut it down to size, but how much of it are they really expecting you to use? My belly button is slowly turning from an innie to...well, flatish. So I'm guessing I should replace it soon, but I don't want to cut it too short.

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