I had Mirena inserted November 2007 and it has been a horrible ex...

I had Mirena inserted November 2007 and it has been a horrible experience! I use to have a light cycle that lasted for about 4 days and I never had cramps. Since I've had the Mirena I've experienced cramps and wouldn't dare wish that pain on anyone! In December I bled for 10 days. I was distraught! I figured ok the worse is over, yeah right! Two weeks later I'm bleeding again it lasted for 21 days!!! I started thinking it prevents pregnancy because your bleeding all the time! I've had two more periods that lasted no less than 8 days. I've noticed I've been having lower back pains and some chest pains. Not to mention I keep a vaginal infection!! I've never experienced these symptoms before Mirena! I want to have it removed but if the pain of having it removed is worse then having it inserted I'm screwed!!