No way to tell. It depends on your body really. I wouldn't risk it though. I would get a clear glass or acrylic retainer. 9 months isn't very long for a surface piercing to heal.
3 months
usually 3-6 months.
2-3 months
I'd say 2-3 months. And clean after of course.
Your belly button does not close. You are stuck with it for life.
A navel piercing can take anywhere from six months to a year to heal completely.
3 to 6mths..it also depends how your belly button react
Yes, as long as you have soil, water, and an onion sprout, you can indeed grow an onion in your belly button.
5 weeks
As long as you have a belly button you can get your belly pierced. Remember that you're doing it for you and not anyone else or their opinions.
The longer you leave the original jewellery in place the better, this material and jewellery design is intended to allow for easy cleaning and quick healing. Generally 3 to 6 months before you consider messing around with putting other questionable jewellery in the piercing.
11 months