Sperm enters the vagina after sex during ovulation and can survive in the woman’s body for 2-3 days. Sperm from the vagina to the fallopian tube takes 1 day, to the fallopian tube, if the ovary ovulation, sperm and egg meet, forming a fertilized egg, the whole process of fertilization takes about 24 hours or so. Generally 6-7 days after intercourse, the fertilized egg is deposited. After the fertilized egg is deposited, the level of human chorionic gonadotropin rises rapidly. So generally about 10 days after intercourse, blood test can determine whether pregnancy or about 2 weeks after intercourse, with early pregnancy test paper or pregnancy test can be checked out. If you are pregnant, you should pay attention to rest and not overwork, eat a light diet, eat small meals, do not eat spicy, greasy food.