uhm, although i haven't got pierced nipples, i've got other piercings so i can at least help out with the last part of your question: go someplace safe and clean! i cannot stress that enough, you don't want a dirty dude with a needle coming anywhere near you.

keep in mind the following: Standards for body piercers

Body piercers must have adequate knowledge on how and where to pierce. They must also have adequate knowledge on infection control techniques and minimum hygiene standards. The following recommendations will help to achieve these standards.
Premises

* All skin penetration premises must be registered with the local council. The register is to be made available for public viewing.
* The premises must be in a clean and hygienic condition at all times.
* A hand basin with hot and cold running water is required in the premises and is recommended to be in the treatment area.
* Soap or other hand cleaning substance is required to be at the hand basin.
* Paper towel or other single use hand drying equipment is required to be at the hand basin.
* The construction of the premises should meet with local council requirements.
* The finish on all surfaces within the piercing area should be made of materials that are easily cleaned.
* Fittings in the piercing area such asbenches should be cleaned between each client and/ or a clean covering placed over the treatment surface.
* Adequate lighting is recommended.

Personal Hygiene

* Body piercers must wash their hands before and after attending a client.
* A clean gown or apron must be worn during a body piercing procedure.
* If a body piercer has a cut or open wound on their hands or fingers especially, they must cover it with a waterproof dressing.
* When carrying out a piercing, single use gloves must be worn.

Equipment

* Body piercers must wash their hands before and after attending a client.
* A clean gown or apron must be worn during a body piercing procedure. [now ok, for this one, i'm not putting my foot down, but you should get the full list of things to look/ask for so i'm including it *smiles*]
* If a body piercer has a cut or open wound on their hands or fingers especially, they must cover it with a waterproof dressing.
* When carrying out a piercing, single use gloves must be worn.

Procedures

* Although not a legal requirement a person under the age of 18 years should not receive a body piercing unless parental or guardian approval is provided.
* Body piercers should have adequate knowledge on how and where to pierce. First aid knowledge is also recommended.
* All necessary equipment should be set up just prior to the piercing.
* The skin to be pierced should be cleaned with a skin antiseptic.
* All equipment that penetrates the skin must be sterilised .
* Sterile packaging should only be opened when ready to perform piercing.
* Only sterile jewellery is to be inserted into the opening. Some jewellery can not be sterilised, check compatibility.
* Contact with sterile equipment should not occur unless sterile gloves are worn. Single use gloves are not sterile unless specified.

After Treatment

* Single use gloves should be disposed of immediately after the procedure.
* All equipment should be cleaned after a procedure.
* Single use equipment must be disposed of after use.
* Single use sharps must be disposed of into a sharps container.
* Re-useable sharps must be sterilised before reuse.
* Details of the sterilisation process must be recorded.
* All waste should be bagged appropriately and disposed daily. It is illegal for sharps or other clinical waste to be disposed of in the general waste stream.
* After care instruction should be provided to the client on cleaning the site and jewellery, infections and what to look for, and healing times.
* There should be no exchange of jewellery once inserted into an opening.