Mirena
"I'm 27 with no kids. I do not want kids and never have. I wanted something long term that was more reliable than the pill and wouldn't mess with me in the way the shot does. I've had Mirena for several months now. At first the cramping was odd and painful, nothing I couldn't handle, it would happen sporadically and would subside after a few minutes. A few months into it, its pretty much gone. No periods and minimal spotting. It was literally, for me "stick it and forget it" I'm very happy with it. No weight gain, no acne, no mood swings. I'm still my regular self. For the insertion  I was really scared and my OB gave me something for nerves. Honestly it just felt like a deep cramp. I didn't feel the pinch. but its different for everyone."