I want a belly button piercing, a nose piercing, and an industrial bar?

I'm turning 13 this summer (July) and I really want some piercings. Not because of boys or anything like that. I really want an industrial bar in my ear. I know like three people who have them. they said it hurts a lot, but I'm wicked good with pain. i have my ears pierced twice. (in total, four piercings.) i got the first piercing when I was four on my ear lobes. the usual spot. it didn't hurt one bit, i laughed literally the whole time. the second time I was ten, i was a little freaked out but it didn't hurt at all. And now I'm ready for more X) My parents will be okay about the industrial bar, and probably the nose. I do NOT want a nose ring, those are disgusting. i want a tiny little stud on the left side like Miley Cyrus. I think it'll look cute. I also want a belly button piercing. Maybe pink or yellow. nothing fancy, just a normal belly button piercing, ya know ? The thing is, my half - sister Renata got a belly button piercing without her mom's or our dad's permission. and then she was sick for like, a year. The doctors couldn't figure it out. then she went to the homeopathic place or whatever, and the lady told her to take out her belly button piercing, and she got better the next day. her piercing wasn't dirty or anything, it was just stabbing right through a sensitive spot in her nervous system. so now my dad is like, "ABSOLUTELY NO." and i don't know how to convince him. i really want it. i guess to me getting these very simple, not-dangerous(if done correctly by a professional), pretty, easy-to-take-out piercings is my way of showing emotion. they hold my feelings, and also, it is a major way I express how I am growing up, and i want my parent's respect and trust. It's not like I'm going all out with the piercings. They're simple. any advice/tips for me? what kinds of piercings I should get? your opinion on the situation? how to show my dad I'm ready, and that i won't get sick if i get it carefully professionally done?