If the usual clinical menstrual cycle is regular, for example, the cycle is 28 days and the menopause is 35 days, it is difficult to see the intrauterine gestational sac clearly by ultrasound, so it is recommended that it is better to have ultrasound examination after 40 days of menopause. In addition, if there are no clinical symptoms, it is not necessary to rush to do ultrasound examination first. It is better to check the blood HCG and progesterone by blood sampling, and if both are normal, it is suggested that it is better to do ultrasound examination after two months of pregnancy. Of course, if there is recurrent lower abdominal pain or vaginal bleeding after menopause. In addition to blood tests for HCG and progesterone, ultrasound examination must be done clinically to understand the development of the embryo and to rule out the possibility of ectopic pregnancy in this case.