I have had the mirena IUD for about four years. There has been no problems and it took my periods away with just a little spotting. The spotting was just brown and there wasn't enough that I needed to use a tampon. About two years ago I was bleeding for about a week and within the past few days I have also been bleeding more than usual. I went to the doctor about a month ago and she said she could see the strings so it was in the right place.I am just wondering if it is normal to sometimes get a normal period with the mirena IUD or if I should have a new one put in.