"i am 19, have no kids and got the mirena inserted about a month ago. at first i was nervous because of the pain and it was pretty painful (not going to lie) but i had not taken any medication prior to getting inserted so that may have been a factor. i have had some spotting but nothing too heavy, i am a college student so the 5 years of having it will benefit me very well. although sometimes i get cramps i think that it is the most effective use of birth control and my doctors were very open and willing to discuss all the side effects. it&#039;s great."