As long as I can remember, I've had leg pains in the exact same spot, being my inner calf. As I've grown up though, it seems that it changes a bit. Its always the same spot, but it now start in one leg (typically my ankle), moves up it, then switches to the other side, down that side, to that ankle.
6 weeks to fully heal to be able to change the earring. cartilage piercings take longer to heal than some other piercings. 6- 12 months is standard. A year is not uncommon either. If you take it out even when it is fully healed and leave it out for too long the hole will close up and this can happen very quickly. http://en.wikipedia.org/wiki/Body_pierci...
Ear Lobe Piercings - Leave your piercing earrings in for 6 weeks before you remove them or insert any other earring. Post earrings must be worn at all times for 6 months to make sure your piercing stays the perfect size.