If the person performing the piercing provides a safe, clean, and professional environment, this is what you should expect from getting a body part pierced:
The area you’ve chosen to be pierced (except for the tongue) is cleaned with a germicidal soap (a soap that kills disease-causing bacteria and microorganisms).
Your skin is then punctured with a very sharp, clean needle.
The piece of jewelry, which has already been sterilized, is attached to the area.
The person performing the piercing disposes of the needle in a special container so that there is no risk of the needle or blood touching someone else.
The pierced area is cleaned.
The person performing the piercing checks and adjusts the jewelry.
The person performing the piercing gives you instructions on how to make sure your new piercing heals correctly and what to do if there is a problem.
Read entire article here: http://teenshealth.org/teen/your_body/body_art/body_piercing_safe.html