Implantation usually refers to fertilization of the fertilized egg and can be seen in women who have conceived normally as well as in women who have undergone in vitro fertilization-embryo transfer for infertility. After successful implantation, there are usually no specific symptoms other than menopause, and some women may experience fatigue, drowsiness, small amount of bleeding and mild abdominal pain. 1. Menopause: After successful implantation of the fertilized egg, menstruation will stop. After the fertilization of spermatozoa, the endocrine and hormone level changes may cause fatigue and weakness; 3. drowsiness: after the fertilization of the egg, the secretion of human chorionic gonadotropin increases, and some women are sensitive to human chorionic gonadotropin, so they may experience drowsiness and other symptoms; 4. a small amount of bleeding: the fertilization of the egg in the endometrium may cause bleeding in the uterine wall, usually pink or brown. It is usually pink or brown in color and usually has a small amount of bleeding and a short duration. After excluding gynecological diseases, trauma and other causes, no special treatment is usually required. Breast changes: After fertilization, with the hormonal changes in the body, the female breast may become soft, accompanied by swelling or tingling, and the nipple and areola may become pigmented and darker; 8. 9. Frequent urination: After fertilization, some women will experience frequent urination due to the secretion of human chorionic gonadotropin, which is usually not accompanied by painful urination.