Most patients cannot detect pregnancy after about 8 days of intercourse, but for some patients, if there is a significant increase in hormone secretion in the body, there will be a significant metabolism in the urine, which does not exclude the possibility of detection. Clinically, if you need to determine pregnancy, you can choose to use a pregnancy test stick or pregnancy test paper to test your morning urine about 7-10 days after the menstrual period, which can clearly diagnose pregnancy. You can also go to the obstetrics and gynecology department of your local public hospital for urine pregnancy test, blood hcg test, blood progesterone test, and pelvic ultrasound test, and based on the results of these tests, you can make a clear diagnosis of pregnancy.