Under normal circumstances, the fetal heart and fetal buds can be checked by ultrasound in about one month after blastocyst transfer. If no fetal heart and buds can be detected at this time, it is recommended to recheck the ultrasound or draw blood to check the level of human chorionic gonadotropin and progesterone in the body one week later to see if they are normal, and then recheck the doubling of the level of human chorionic gonadotropin three days later, and if the doubling is good, and the heart and buds of the fetus can be seen in ultrasound at the same time, you can put your mind at ease. Usually regular prenatal checkups, close monitoring of the embryo’s condition, during this period should pay attention to more rest, avoid strenuous activities, from the diet to strengthen the intake of high-quality protein, improve the body’s immune system. Avoid sexual intercourse during the first trimester of pregnancy, and go to the hospital in case of abdominal pain or vaginal bleeding.