If you don’t have menstruation for half a year, but you do end up pregnant in the clinic, even though you don’t have menstruation, but your ovaries are still functioning normally, you may ovulate, and you will get pregnant in the clinic if you have sex just at the time of ovulation. This situation is often caused by clinical endocrine disorders, but clinically ignored that there is still ovulation, so it results in pregnancy. If you want to continue the pregnancy, it is recommended that you go to the hospital regularly to give maternity checkups, and the expected date of delivery must be based on the first ultrasound examination after pregnancy to determine the week of pregnancy to project the expected date of delivery, so as not to cause overdue pregnancies or premature labor. Clinically, it is recommended that in addition to regular checkups, nutrition should be strengthened and ultrasounds should be done on time. Between the 23rd and 28th weeks of pregnancy, a four-dimensional ultrasound should be performed.