10% this is because of the fact that no matter how much we tell people to take care of there piercing they just don't seem to listen.
It is infected!
No.
Yes you can
Your belly button piercing hurts more then a normal ear piercing your belly button piercing is more sensitive then a ear. :]
Usually a week but it'll get red anytime you hit it or get it infected.
Yes it is infected. Get some antibiotic treatment for it.
you have to be 18
No. Piercing your belly button wont hurt as compared to piercing your tongue.
If you don't put a special jelly on it it will get infected and swell enormously
I would say maybe 14 to get your belly button pierced so that the person is more mature and will look after it properly.
Obviously. Everything hurts when you get it pierced. It might not hurt when the needle goes throug. But it will hirt when its healing.
Before you get anything else pierced, you should wait until your surgery has completely healed. You do not want to do anything that could get it infected.