Generally, you can test whether you are pregnant after 10 days of intercourse. If intercourse is scheduled during a woman’s ovulation period, and the couple is relatively healthy and there are no conditions affecting pregnancy, blood hCG tests can usually be drawn about 10 days after intercourse to determine if pregnancy is present. If the blood hCG value is significantly higher than the normal value and there is a doubling of the value measured on the next day, there is a higher possibility of pregnancy. If menstruation is regular and there is a significant delay in the menstrual cycle, you can go to the gynecology department of the hospital for an ultrasound examination around 42 days of menopause, which is 6 weeks after menopause, so as to determine whether the pregnancy is intrauterine and exclude the possibility of ectopic pregnancy. If you are planning to have a baby, it is recommended that both partners should do the relevant examinations before preparing for pregnancy, such as the female partner should complete the four eugenics tests and ultrasound examination to understand the condition of the uterus, and the male partner should also undergo sperm testing and other relevant examinations, and the results of the examinations should be normal to prepare for pregnancy. If there is no intention to get pregnant, it is recommended to do a good job of contraception to prevent unwanted pregnancy.