"i had my mirena inserted this morning. i was not on my period, was not prescribed any medication to dilate my cervix, and have never had children. it is now 11:00 am and the device was inserted at 9:15 am. i am feeling fine and cramping less than when i am on my period. as far as the insertion goes, my doctor told me there would be a pinch and then a big cramp.  the pinch lasted longer than i expected, maybe 90 seconds, but was not at all unbearable.  when she told me the big cramp was coming she was not kidding. i felt a deep heavy cramp for about 30 seconds. i held my breath. "