"i&#039;m on my second mirena, i got my first one at 17, and just got my second one two weeks ago. i am having at little more cramping with this one that i didn&#039;t experience with the first one. i had a wonderful doctor who gave me the medication that helps dilate your cervix if you haven&#039;t given birth. i love the mirena i recommend it to anyone! i highly recommend taking tylenol before hand."