On day 8 of blastocyst transfer, the morning pregnancy test paper detects a white panel, which is still hopeful at this point. Because it takes about 7-10 days for the embryo to implant after transfer, it is generally recommended to test two weeks after transfer. After the blastocyst has successfully implanted, the level of human chorionic gonadotropin in the woman’s body begins to rise, so that it can be determined whether the pregnancy is successful. It is generally recommended to take an early pregnancy test two weeks after the transfer, so the current test result is negative 8 days after the transfer, which is still promising. After the blastocyst is transferred to the uterine cavity, as the embryo develops, it will gradually find a suitable location for implantation. However, certain conditions are needed for implantation, such as differentiation of syncytial trophoblast cells, synchronized development and coordinated function of blastocysts and endometrium, as well as sufficient amount of progesterone in the pregnant woman’s body. Regular checkups are required during pregnancy, and the doctor should be consulted promptly if any abnormality is detected.