"i have had the kyleena iud for about ten hours now. i was very nervous going into the procedure but happily surprised to find out that it did not hurt as much as i thought it would. i am 18, weight 130. i&#039;d say during insertion the pain was about a 5/10 and it was over before i knew it. i had minimal cramping afterwards, no bleeding, and only some lightheadedness but only when i exerted myself. i haven&#039;t felt cramping in a couple of hours . i&#039;m loving it. it is so worth it."