Normally, a woman can go to the hospital for the relevant tests on the 35-40th day of pregnancy. Generally, blood chorionic gonadotropin and ultrasound on day 35-40 of pregnancy in women with regular menstruation can indicate pregnancy, and its the earliest test. This is because at this stage, the chorionic gonadotropin is elevated and the double ring sign, or gestational sac, can be seen on ultrasound. At the same time, women are further checked for progesterone during this period to clarify the intrauterine condition of the embryo. If all these tests are normal, the ultrasound can be repeated at about eight weeks of pregnancy to determine if there is a fetal bud and heart. And later on, you can go to the hospital for NT examination around 12 weeks of pregnancy to clarify whether the nuchal translucency of the fetus is normal, after which you need regular labor and delivery until normal delivery. In addition, patients should avoid drug stimulation during pregnancy, pay attention to a nutritious diet, and eat less cold, spicy and stimulating food.