To echo what others have said if you do have them done, don't get them done with a gun, go to a piercing parlor or tattoo parlor that does piercings and get them done. Not only are they unsanitary when done with a piercing gun, they are not as accurate and the wound is a crush wound rather than a puncture wound, which causes problems with healing. Plus if a stud is used to pierce with there is a pretty good chance that drainage won't be good, increasing the chance of infection, plus there is a risk of one end of the earring coming through the hole. I could go on but I'll spare you.
I can't tell you enough how much I hate piercing guns! I do love piercings though, I've had my lip pierced (sadly I had to take it out for work) so I'm thinking about getting my septum pierced (that part between your nose) because thats really cute and easy to hide. I also have a couple holes in each ears, and my belly button done, and while cheap metals do tend to give me an infection if I take care of them they don't cause me any problems.