Miscarriage to motherhood - A Successful Journey Episode 3 Implantation of Pregnancy Implantation of pregnancy or embryo is a complicated process. If there are complications at any stage of this process, implantation does not occur.

There are 3 main reasons for failure of implantation. First, defects in the embryo, second, disease of the inner lining of the uterus (endometrium) and third, disorders affecting woman’s general health.