A successful transfer of grade 3 embryos has the potential for retention but of course there are also cases of failure. Under normal circumstances, grade 3 embryos are relatively poor quality blastocysts, but if the grade 3 embryo can successfully implant, the woman can also have a normal pregnancy. There is no manifestation of abdominal pain or vaginal bleeding in the early stages of pregnancy, then the pregnancy can usually be successfully preserved. Generally the success rate of third level embryo transfer is relatively low, very often, some women IVF cultivation of embryos from one to three levels, then it will be from the best to the second, priority selection of the first level of embryo transfer, when the first level of embryos failed to bed, and then transfer of the second level, third level. Sometimes the first grade and second grade embryos fail to implant, while the third grade embryos succeed in implantation. When there are only third-degree embryos, don’t be discouraged, it is also possible to succeed. After the third level embryo has successfully implanted, it is recommended to have regular checkups at the hospital.