Kyleena
"Getting the Kyleena did not hurt as much as I had expected. I took an Advil beforehand, so that probably helped.
Afterwards however, I felt very sick, and dizzy for the rest of the day. 
I would strongly recommend if you are getting this, to make sure the rest of your day is free, and that you have someone to drive you home if at all possible. I spent the next 3 days feeling dizzy, getting heaches, being tired, and just all around gross. 
I've experienced some light bleeding, but nothing too horrible. If you get an IUD though, I would strongly recommend carrying a tampon/pad with you, as you don't want to be unprepared if bleeding does occur. 
It hasn't affected my sex life at all, and I feel fine now, so overall I'd say it's good!"