Ear stretching question.....10 points for best!! ?

It's very tentative, bit I'm thinking of stretching my ears. I'd go to a 0 or 00. What I want to know is if I choose to take them out, how long does it take for them to go back. Also, are there things that I can do so that my holes will go back without looking saggy and puckered. Also, how can I convince my mom to let me stretch. Anything else you can tell me would be great. Also, if anyone has their rook pierced, could you telle about it. I want my rook as well. Thanks!!!!!!