i have had my IUD mirena in for about 4 1/2 years and always had normal periods, this month i havent started at all.. i never had any symptoms of my last pregancy and wat if its the same with this one if i am pregnant now. I have took a pregnancy test but came out negative.. the doctors said that it could be that its my hormones changing since its about that time to come out.. but i dont know.. does anyone else think differently??