IUD question?

Raquel
Does anyone have the IUD in their arm? 
I've been on the shot before and currently am back on the pill 
I'm wondering if 
1. Any weird side effects? 
2. Do you still get your period..... If so is there any changes?
3. Anything you don't like about it? 
4. Anything I should know before I get it?
Thank you ladies :)