I researched Mirena and found it to be a very good method of birth control. However I became pregnant and have no used for it. My insurance would not cover the cost of the mirena system. I paid cash for the system, therefore, I can't return it. I bought it over the web. The system is sealed in the package. Is there anyone in need of this system. I would only ask for a small amount, this system cost me over two hundred dollars.