Quoting Gheordynn [CNL]:" They do take a super long time to heal, though. Like, months. You might think they're healed because they don't hurt anymore, but they're not."
That's true. I had mine pierced for 9 months, I had to take them out for surgery (took 3-4 hours) and I went to put them back in immediately and they were completely closed.
I had them repierced though.