It is not necessary to draw premature conclusions if the fetal heartbeat and germ do not appear at 50 days of pregnancy. If it is determined that the pregnancy is intrauterine, a judgment needs to be made in conjunction with other indicators such as the size of the gestational sac and the duration of the gestational sac. If ovulation is delayed due to irregular menstruation and no fetal heartbeat or fetal bud is seen, there is hope to see it on re-examination, but there is no hope in case of fetal abortion. Irregular menstruation can lead to delayed ovulation, resulting in late implantation. The actual gestational week may be less than 50 days, and the fetal heartbeat and fetal bud may not be visible on ultrasound at this time, so it is recommended to wait for 1 week before going to the hospital for a re-examination. If the intrauterine gestational sac lasts for more than 2 weeks or the average diameter of the intrauterine gestational sac is more than 2.5-3 cm and no fetal heart is seen, if the fetal heart was present in the past and disappeared or if the fetal bud is more than 5-7 mm in length and no fetal heart is seen, then embryonic abortion is considered and timely abortion is recommended. In early pregnancy, the embryo is not stable, so it is not recommended to have intercourse at this time, do not contact with drugs and chemicals, continue to supplement folic acid to prevent fetal optic neural tube malformation, and do all prenatal examinations.