Take it off.
A belly piercing is a piercing on the belly button. Where your belly button might go in or out, it is the slight arch you get just above it. it is a piercing through that area. depending on how your belly button is formed. Search google for images.
Yes
The pain of the belly button piercing should subside after a week.
Its the jewelry that goes into a belly button piercing.
Yes you still can.
No you can't. You can hurt yourself. xD
A navel piercing can take anywhere from six months to a year to heal completely.
A belly button ring is a body piercing placed in a cauterized area of the belly button.
Your belly button piercing hurts more then a normal ear piercing your belly button piercing is more sensitive then a ear. :]
Belly button.
A lip piercing hurts more than a belly button piercing, but neither hurt much at all. Getting your lip feels like you accidentally bit it haha and you can barely feel a belly button piercing.