It is possible to check if you are pregnant after 24 days of sex. Usually the fertilized egg will be deposited in the uterus 6-7 days after the union, and soon after the fertilized egg is deposited, human chorionic gonadotropin can appear in the woman’s body. Therefore, pregnancy can be detected from blood 7-10 days after sexual intercourse, and after another week, pregnancy can be detected through urine. Therefore, it is possible to detect pregnancy after 24 days after sexual intercourse. If the blood test for HCG is negative after 24 days of sexual intercourse, it is considered that there is no pregnancy. If the test is positive, you are pregnant. If pregnant, women should pay attention to strengthen the nutrition, maintain a good work routine, avoid staying up late, tired, need to pay attention to regular obstetric examination, observe the development of the fetus.