@Mor - I hope you got it pierced properly with a needle, rather than a gun. A piercing gun shouldn't really be used for anything, but you can get away with it in the lobes. A decent piercing artist will always use a needle to get it done properly in any other place.
And cartilage is very easy to damage. If you have a look at the pictures of people with cauliflower ears you will very quickly develop an urgent need to protect your own ears from harm.