Mirena out of place

Hello! Recently i got an ultrasound and they told me that my mirena is half way in my cervix and half way in my uterus. She said dont worry not to worry about it but they could fix it if i wanted. I have the mirena because i have terrible periods so she didnt want to mess with it too much because it has been helping my periods except the past 2 months. Ive only had it 4 months. So im just curious what everyones opinions are. If i should leave it be or get it fixed. And im curious if any one has had theirs dislodged like mine and gotten pregnant.