"i had the iud insterted in march 2015. my doctor had me wait until i was on my period so that my cervix would be &quot;spongier&quot; and wouldn&#039;t hurt less. unfortunately for me, because i had been on birth control for 4 years prior, i was having an extremely light period. easily the most painful experience of my life. was doing all i could not to scream in the examination room during the procedure. after the procedure i had to lay there for a while before being able to get up and leave.  the pain lasted the entire day. very sharp throbbing pain. i aimost threw up twice. after a few days i was fine. my next period was very painful, but got lighter as time went on. i&#039;m very happy with this iud, i&#039;m not sure if i will replace it though due to the pain"