"i have been on the mirena for eight months now, and i have never been happier. i had my period once four months later, it was so light i only needed a pad. the insertion was painful but it lasted no more than a minute. i had cramping for two days and spotting for less than a month. i will use mirena as birth control until i&#039;m ready to have kids, and when i&#039;m done having children i will get right back on it. i love it!"