IUD questions

Ha
I'm currently taking Yaz, and I have no complaints except I think it's lowered my sex drive. I'm kind of curious about the IUD option (I'd probably want the hormonal version) but I've also heard a few horror stories about things that can go wrong with them. If anyone has tried one, preferably the mirena, what are your experiences? How much did insertion hurt? And did it affect your sex drive?