It is advisable to go to the gynecology department to take blood test to clarify whether conception is taking place. Half a month of pregnancy generally refers to half a month after intercourse. If conception is successful, it means that the fertilized egg has completed its implantation and the HCG index in the body has increased at this time, so if you want to clarify the result, you need to go to the gynecology department of the hospital to draw blood to check the blood HCG index. If you use early pregnancy test paper or pregnancy test, the test may be weakly positive due to the short time interval after intercourse, or the HCG index may rise slowly because the fertilized egg has not been implanted in the uterine cavity, resulting in inaccurate test results as pregnancy cannot be detected. This is because the detection of human chorionic gonadotropin in the blood is more accurate and earlier than the detection of human chorionic gonadotropin in the urine. In addition, after pregnancy is confirmed, sexual intercourse is prohibited in the first trimester to avoid preterm abortion, and folic acid should be supplemented in a timely manner to prevent fetal neural tube abnormalities.