A great aunt is also known as menstruation. Usually, pregnancy can be detected by urine HCG 3-7 days after menstruation is delayed. The yolk sac can be seen by ultrasound as early as 7 days after menopause. The time may fluctuate depending on how early or late the fertilized egg is implanted.
Generally after intercourse, fertilization occurs 24 to 48 hours after intercourse, after which the fertilized egg will implant about a week later. After the fertilized egg is laid, the pregnant woman’s body will secrete human chorionic gonadotropin (HCG). After about 2 weeks, HCG will be detected in the urine. Therefore, pregnancy can usually be detected by urine early pregnancy test 3-7 days after menopause.
The yolk sac is usually visible on ultrasound as early as 35 days after menopause, which is 7 days after menstrual delay. There may be some delay in the above time due to the difference in the early and late time of the pregnancy egg’s implantation.
If a woman wants to know whether she is pregnant earlier, she can take a blood HCG test as early as 7 to 10 days after intercourse to determine whether she is pregnant initially by whether the blood HCG is elevated.