I actually just had my Marena taken out, and let me tell you, it was a lot less painful taking it out, then it was getting it put in.
I would not be deceived by 5 yrs of no periods, because with me that WAS NOT THE CASE! I've had mine for over a year, I'm hoping now that I've had mine removed, that will stop.
Also, a wk before I had mine removed I discovered I was pregnant, unfortunately I discovered this through a miscarriage. So, they are not 100% effective, just like everything else out on the market.
But, just like everything else, not everyone is the same. The issues that I had with the IUD may not even pertain to you.
Here is the thread that I started the day I got my IUD put in:
http://www.horseforum.com/teen-talk/...nt-long-12935/
Good luck in your decision.