I have had my mirena for about six months. I have bled all but tw...

I have had my mirena for about six months. I have bled all but two weeks of the six months. Because I am always bleeding, even when Im not "bleeding" I am having this brownish discharge. And just when I think its going to stop, I get this clear discharge that smells like sewage. I have never smelt anything so horrible in my life. I have had this three different times in the six months. I don't know what I am going to do. I got the Mirena when I started college because we can't afford a accident pregnancy right now. It was free with my insurance. Now, I have no insurance and I can't afford the 250.00 to remove it.