IUD help...

Okay ladies I am in need of some advice. I have had the IUD Marina in for about 2 years now and at first it was great but for the past about 6 mouths I have noticed huge changes in myself like I am tired all the time, I get stabbing pain in my abdomen at random times, I have mild cramps all the time and at times I have cramps worse then when I'm on my period. I and even my BF have noticed a change in my moods, I use to be a quit unemotional kind of person but now I cry over just about anything and I am always irritated and things get on my nerves really easily. I want to have the IUD taken out but this is the 3rd kind of birth control that I have tried and my body has rejected I have tried the pill, the shot and now the IUD do any of you ladies have any ideas of what I could try?