I've gone through this before. You don't need to get it repierced, but don't force it through yourself. Have someone else do it so that way they can see everything perfectly.
Also, try to use the same earings you got your ear pierced with, or just by a pair that is FOR piercing at the stand where you can get your ears pierced. This will make poking it through the thin piece of skin quick and easy, though you don't have to unless it closed alot. Make sure to dip the earing you are using to get it all the way through in rubbing alchohol, and after that, leave some posts in for a couple of days to reasure the re-made hole.
Poke through the back. It will open easily. Just be careful use alcohol or peroxide so it doesn't get infected.
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