A reputable piercer will use 316L surgical stainless steel jewelry that has been properly sterilized.
Belly button rings. If you look at your local jewllers, they should have some in stock for you to look at:).
When you get pregnant, most care providers recommend removing your belly button ring. Even women who don't remove their rings report that belly button rings itch and pull as the belly stretches around the fifth or sixth month. There is also the risk of infection if the belly button ring scratches you or opens a small wound. If you do take out your belly button ring, the piercing hole will probably close, requiring you to re-pierce your belly button after having your baby. However, if you don't want to take out your belly button ring you may want to purchase a non-metal pregnancy piercing ring. These are flexible and two inches long to accommodate your growing belly. Pregnant women claim that this product allows them to keep their bellies pierced without the discomfort of other belly button piercing.
You can get clip on navel jewelry. Here is an example of a website that sells them : http://www.jobananas.com/silver-fake-belly-rings-c-269.html
There are false, non-piercing rings that can be used for belly jewelry. These usually have two beads on each end and simply clip on to the skin.
Yes, and they recomend you not to cause the eyebrow ring may sink into your naval. they recomend you to use belly button rings instead.
yes
When you get your belly button pierced, the person doing it will generally, if not always, use a stainless steel belly button ring. At least they will if they're a professional, and if not you don't really need to get a piercing from them anyway.This will have to stay in until the piercing is properly healed and then you can put in a clear or plastic retainer, available in different colors.
completely yes
no, they sell belly button rings tho if thats what you mean
claires or ebay
There is always the standard risks of any piercing, like infection and scarring. These can be mitigated with proper sterilization and hygiene. There is also the risk that, as a person grows, the location of the piercing may change.
You can either take out your jewelry, or you can purchase special belly button jewelry for pregnant women, which are simply referred to as pregnancy belly button rings.