Hello, I have had my Mirena since November 2011. I got it taken out April 26, 2013. My husband and I have quite the regular sex life on mirena. The night before I got my mirena removed we had sex with ejaculation inside. I went In the next morning got mirena removed, and was sent home with Nuva ring. I inserted Nuva ring on Sunday, and had some light bleeding. What is the bleeding from? Could there be a chance of pregnancy from the intercourse the night before removal? My Menstrual cycle 1st day last period was April 15.