Reviews for the Copper IUD please:) pros and cons welcome!

I'm 22 and thinking about getting this IUD but would like to hear some things about it whether they're good or bad! 
I've heard it makes your period heavier and u have more cramps, is that true? My periods were very irregular but heavy and I had really bad cramps. I recently had a baby and have not gotten a period yet, I'm breastfeeding
So yeah basically I just want some advice! Please n thanks!! :) 
**wasnt sure where to put this!