It is possible to detect pregnancy by testing blood for human chorionic gonadotropin before menstruation.
Generally speaking, pregnancy can occur if a woman has intercourse without contraception, especially on the day of ovulation. Ovulation usually occurs about 14 days before the next menstrual period.
After the fertilized egg is formed and lodged in the uterine lining, the woman’s body will secrete a large amount of human chorionic gonadotropin, which first accumulates in the blood, and the concentration can usually be detected 7 to 10 days after intercourse on the day of ovulation, and pregnancy can be determined through the detection of human chorionic gonadotropin in the blood.
Before menstruation, women can usually determine if they are pregnant by testing for human chorionic gonadotropin in the blood.
It is recommended that if a woman is planning to get pregnant, she should usually take more nutrition, maintain a good diet and lifestyle, and not stay up late at night.
If there are suspected signs of pregnancy or delayed menstruation after intercourse, it is important to go to the hospital as soon as possible for a clear diagnosis to avoid adverse consequences.