I have had a copper coil (not Mirena). I was just checking myself as I couldn't remember taking out my last tampon, felt something and pulled - and obviously out came the coil. Firstly - I didn't think I'd be able to do that, I didn't think the string came down far enough before, so might it have shifted already? Secondly - other than having to use other methods until I can get it replaced, do I need to worry I've damaged myself? I'm feeling a little bit of cramping, but no worse than when it was put in in the first place.