The timing of pregnancy checkups after pregnancy is not exactly the same among different individuals. If there are no obvious abnormal manifestations, the routine checkup schedule mainly includes: 1. ultrasound between 42-49 days of pregnancy. 2. first pregnancy system checkup between 10-14 weeks of pregnancy, early NT screening, and establishment of maternal health records. 3. mid-term Down’s syndrome screening between 16-18 weeks of pregnancy. 4. 4.4-D ultrasound for major abnormalities between 20-28 weeks of pregnancy. 5.Diabetes screening around 28 weeks of pregnancy. 6.After 32-34 weeks, another repeat ultrasound to determine the fetal position. 7.Ultrasound before delivery around 38 weeks of pregnancy.