You can get it done again once you're sure the piercing is healed inside as well as out.
A pierced belly closes quickly if you have not worn a ring consistently for about a year. If the hole closes, it may just be partially closed and it can be "punched" out again easily.
It varies from person to person, depending on the size of your nipple.
a septum piercing never closes completly, sorry
How long has it been pierced
It is best to wait about 6-8 weeks like you would with any other piercing :)
As long as you are taking care of it nothing would happen and it should be fine.
It depends on how long you have had the piercing. if its new about a couple mins to an hour maybe depends on the body part you put the piercing. if you had it for a while it could take a couple days to close or a month
6~8 weeks and even longer depending on how the piercing was done. As long as the mater is whitish yellow you are o.k. and that is normal discharge, it will ease up as the piercing heals and becomes seasoned.
Provided it was done properly and it is deep enough, it shouldn't reject and should last for as long as you want it.
less than 24 hours
Yes, as long as the gauge is correct for the tongue piercing - for example : nipple bar is 14 gauge - usual tongue piercing jewellery is 14 gauge and the length of the nipple bar is the correct length for the wearers tongue (this varies from person to person). Basically - if it fits - wear it!
It doesn't take long before a new tongue pierce hole closes because when you open and close your mouth your hole in you tongue just gets used to having nothing in it so i would say about 24 hours before it closes.