I have had the Mirena IUD for two years, and I can never tell if it's in place. My ob/gyn explained how I need to check every month, but I never can. So in the last 3 months I have had two pregnancy scares where I had to actually do a pregnancy test...thinking of switching back to the pill. I feel like it had more predictability for me. Anyone else do this? I don't get much of a period on Mirena so that is why the pregnancy scares have happened.