IUD advice?

I'm fifteen and I'm having sex regularly with my boyfriend of a year and four months. I've tried multiple different BC pills but they all messed with my hormones to much and it made me really angry and depressed. 
My mom thought it' be a good idea for me to get an IUD so I have an appointment next Saturday to get the ParaGard. I'm really nervous about it. Can anybody tell me some of their experiences with getting an IUD inserted and how it all worked out for them?