I got the copper iud a year ago. At my 3 month check up the dr told me I had an upside down uterus after I told him I couldn't feel the string when I would check for it and he told me that the way my uterus was positioned that I wouldn't be able to. Recently I have checked and I can feel both the string and the opening to my cervix very easily. Is this normal for my uterus to just chance positions?