I got my mirena in 2008 and the first week I bled for a week and it was light. After that, I had no other periods for 5yrs, there would be very light pink wipes after bathroom use. I never had heavy spotting not periods. My 5th year I got a replacement because the first one did so well. The second mirena did well until 2yrs later. I havent reached the end of the third year yet which will be April 2016, and I have been spotting heavier and longer days. This draws concern for me because I fear my body is changing and the mirena may not be as effective for the remainder of the time I have left. I am seriously considering taking it out, but I am spoiled from not having actual periods. I dont know what to do at this point.