It can be measured as soon as 10 days after ovulation, but there are individual differences.
Women of childbearing age will generally be fertilized within 24 hours after intercourse during ovulation, and the fertilized egg will implant in the bed 6-7 days after fertilization, and generally start to secrete HCG (human chorionic gonadotropin) 1 day after implantation, at which time you can determine whether you are pregnant by detecting the level of peripheral blood HCG in the mother’s body. Therefore, pregnancy can be detected as early as about 10 days after ovulation.
During early pregnancy, blood HCG levels can also be measured to determine the development of the embryo, and ultrasound should be performed at about 40 days after menopause to clarify normal intrauterine pregnancy and to understand the development of the embryo. In case of poor embryonic development or unsatisfactory doubling of HCG, it is necessary to actively preserve the fetus under the guidance of the doctor, and repeat the examination on a regular basis.