It is recommended that an early pregnancy test be done at least five weeks into the pregnancy, as this is when the accuracy is higher and the false-negative rate can be effectively reduced. Early pregnancy tests may be negative due to low levels of human chorionic gonadotropin, and early ultrasound examinations may also detect intrauterine as well as extrauterine pregnancies, and the time of pregnancy is mainly based on the last menstrual period. After pregnancy, you need to pay attention to strengthen the nutritional intake, you need to pay attention to diet light, hygiene, eat small meals, avoid overwork and stay up late to prevent miscarriage, you need to pay attention to whether the abdominal pain, vaginal bleeding and other discomforts. Early pregnancy need to quit smoking, alcohol, oral folic acid, regular checkups to understand the development of the embryo, but also need to rule out the possibility of ectopic pregnancy.