I had a Mirena for about 3 years. When it was first inserted I bled for about nine weeks. My DS was 6 weeks old when the IUD was inserted and I bled for 4 weeks after his birth. Don't know if that affected how long I bled for once the Mirena was in. I had a couple of irregular, light periods in the few months following and then nothing at all. So, no AF from about 5 or 6 months post insertion. Ultimately, the Mirena wasn't right for me but I loved not having AF!
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