The side you want it on, there are no left right rules for lip piercing.
I doubt its safe for anything to go inside a lip piercing. Unless its healed.
No. I had one too when my lip piercing was still healing. It's scar tissue and will go away as the piercing heals.
Go to a doctor.
you can do a lip piercing yourself although i do not recommend it for sanitary or infection prone purposes you may also go to a tattoo parlour and have it pierced there.
There are no bones in the lip. Body piercings do not go through bone, only skin or cartilage.
Go see a professional body piercer.
It depends on where you go to get it pierced.
Contact your local health unit they will advise you about age requirements and locations that provide professional body piercing services in your area.
Well I would suggest you go talk to a professional body piercer in a studio and get there impression on your "fate lip" they will tell you if it's and issue or not.
Becoming swollen and sore after getting the piercing is usually common. What is uncommon is the stud sinking into your lip. You probably need to go back to the piercer and get a different type of jewelry.
Go see a professional body piercer, don't screw around with your piercing if you have no clue as to what you are doing.