Copper
birth control
"I got my ParaGard 4 months ago because I can't have hormonal birth control due to clotting issues, but I also really don't want kids (short of getting my tubes tied) so I went IUD.
First off I love it but, insertion was a nightmare for me. I had the "1%" reaction where I had contractions for hours after, vomiting, and fainting. It was horrible but I stress this is a rare thing.
 That said, I love it. My period hasn't been much heavier than it used to be off pill, however cramps are pretty intense. They're bad for about two days then everything is about the same as being on a hormonal pill. All things considered, side effects and all it's worth not worrying for 12 years. Everyone should keep in mind all experiences will vary of course!"