I took mine out when I was about 24wks with DD cause it was hurting too much, and 'back then' all they offered me was a bit of fishing line through the hole to keep it open. I ended up getting it re-pierced a year or so after birth.

With DS, I just took it out, about the same sort of time. I decided that I would just get it repiecrced again when I wanted it done. Well a couple of weeks ago - while my DH was interstate with work, I was in bed by myself one night and decided to see if my stud earring would go through my navel hole - to see if it was still there or closed over. Sure enough it was still there and I got not only my thin diamond stud, but also my navel bar through the hole. Obviously I left my fav navel bar in!

I hope you find what you want for your belly, If you don't you'll still probably be able to get it back thru if it's been pierced for that long.