I would take out the safety pin soon! a couple of days shouldn't be a big deal but safety pins, paper clips, sowing needles, etc... are made of low quality metals and some of those metals will react with open wounds and cause an infection. you should use something sterile like surgical stainless steel (like your stud).

The cheap metals in the safety pin will more then likely give you an infection.

Also I read and was told that "twisting" your piercing during the first 2 weeks isn't a good idea because it can cause scarring, and if you plan on stretching your lobes or "gauging" your ears it may make it a little harder.

Hope this helps~!
~Raelum:smokin: