Levonorgestrel
"Was slightly uncomfortable during insertion, but not unbearable. Experienced mild cramping afterwards and spotted for the next several days. Was ok in the very beginning and has since maintained it's contraceptive purpose, but spotting began again and never stopped resulting in having to use panty liners daily and dealing with it irritating the skin. On top of this is hair lose, bigger appetite, irritability, cramping, and fatigue."