The most common embryos transferred are mostly day 3. After placing the day 3 embryos into the uterine cavity, the embryos swim for about 3-4 days to implant; in case of day 5 blastocysts for transfer, the embryos swim for about 2 days to implant. Embryo transfer refers to the formation of embryos or blastocysts after the sperm and eggs are cultured in vitro until day 3 or day 5 and then transferred to the woman’s uterine cavity. Whether the embryo transfer is successful or not, you need to go to the hospital after 2 weeks to have your blood drawn to check your blood HCG and progesterone levels. If the HCG level in the blood is increasing and the progesterone value of the check is rising, it means that the embryo is of good quality, stable in the uterine cavity and has gradually developed. However, if blood is drawn for blood HCG and the result of the elevation curve is not satisfactory or even gradually decreases with time, and vaginal bleeding increases, this situation is a sign of embryo transfer failure. After embryo transfer, it is important to take good bed rest, keep relaxed and happy mood, eat more high-protein food and don’t exercise strenuously to help embryo implantation.