"i&#039;m 24 and have had one baby. i waited until i was 8 months post-partum for insertion. i have pcos (poly cystic ovarian syndrome) and getting mirena was a 50/50 risk of improving or hurting my condition. i did not get my mirena inserted while on my period since pcos women have irregular cycles. insertion wasn&#039;t really painful; it felt like getting a pap smear. if you&#039;ve had a baby, insertion is like a mosquito bite compared to labor. i got my mirena on december 26th, 2013. it&#039;s now january 31st, 2014 and i&#039;m still bleeding like an average period. i&#039;ve read a lot of reviews on here and noticed a trend for the women who have had babies before insertion, and they bled quite awhile longer than women without a history of children."