I have mirena since March 2007 and it's fell awful. My first symp...

I have mirena since March 2007 and it's fell awful. My first symptoms were nausea,headache,and spoting all the times, but since one year I have only headaches and cramps,sometimes when it is time for my period and because I don't have no more I have a brown discharge that smell so bad ev en you can smell it from far away. No drive and moody. They put mirena because they said that I have the uterus linen so thick and Mirena can put this linen thin, but i been suffering with a lot of side effects and I told my Doctor but she said is not Mirena it's me.