"i didn&#039;t know anything about mirena except that it was a little t-shaped piece of plastic that lasts for 5 years.  so i chose to get it. i&#039;ve had slight occasional cramping and rare bleeding that&#039;s very light and only lasts a few hours when it does occur.  i&#039;ve had it in for about 2 1/2 years.  the only scary thing is reading the horror stories all these women have about it.  i have had no problems since it&#039;s insertion aside from terrible cramping for about a half hour while my cervix adjusted to it once it was put in.  i know that as long as nothing bad ends up happening that i&#039;ll be having it replaced once my 5 years is up.  i love mirena."