"i had mirena inserted about 4 months ago. i have given birth once and my fiance and i decided we were done having children for now. the procedure didn&#039;t take very long. i took some naproxen about an hr before my appointment for pain. it was a little uncomfortable and accompanied by mild cramping afterwards and for the next few days. so far i&#039;ve still had my period every month. there&#039;s no heavy bleeding and i barely have any cramping if any at all. so far the experience has been good and it seems to work well."