K.T.
Hi A.!
I hate to be a downer-but i had serious problems with mirena. i expelled mine out the wall of my uterus and needed to have it surgicaly removed. this was after having a laproscopy to try and find out if the iuc was still in my uterus.
I have been told I am a 1 in a million case, but this is something you have to know going in. and check for the strings every month because you can expell it and not know it, trust me i had the conversation with Kathy (ultrasound tech goddess) about well you would think it would be something youd notice if you passed it vaginaly.
My body rejected the iuc, didnt expell it, and it went through the wall of my uterus. this was after it was inplace for 15 months.
if you have done your homework you should be fine, dont get complacent with it. mine dislodged in september ( they think) and we didnt find out untill march. this is a very safe method for most.
i hope my point of view helped you some,
K.