Generally, pregnancy can be detected 10 days after ovulation, but there are individual differences. After intercourse during ovulation, women of childbearing age will complete fertilization within 24 hours after ovulation. 6-7 days after fertilization, the embryo will be deposited in the uterine lining and start to secrete HCG (human chorionic gonadotropin), so pregnancy can be detected by testing the pregnant woman’s blood HCG level about 10 days after ovulation, but when the embryo is late in depositing the embryo, it will delay the time of detecting the pregnancy. After confirming pregnancy by testing blood HCG levels during early pregnancy, it is recommended to have an ultrasound around 6 weeks after menopause to clarify a normal intrauterine pregnancy, and to be able to check the week of gestation based on the size of the gestational sac or the size of the buds. During early pregnancy, as the development of the embryo is still unstable, it is necessary to avoid exertion and strenuous exercise, increase diet and nutrition, take folic acid on time and follow the doctor’s instructions to take obstetric checkups on time.