I got my Mirena a week ago and the day I after I got it, I went to see if I could find the string so I knew where it was but I couldn't find it? And when I had sex with my SO, I asked him after because I was worried but he said he felt nothing at all. Should J be worried or is it that the Dr just cut it really short? Also i didn't have any bleeding until yesterday and it's really light. Had either of these happened with anyone else ?