IUD Opinions (Removal)

Michelle
Hello!
So I have had my IUD Mirena for almost 3 years already. But I want to remove it. The reason why I want to remove it is My oldest sister had a really bad blood infection called Sepsis that left her in Intensive Care for almost a month and hospitalized for almost half a year and ALL of it was cause caused by the IUD (copper) she had. 
So now I'm really scared that I'll go through that as well.
Opinions and recommendations of any other type of birth control?