How many days after intercourse does the fertilized egg implant?

Under normal circumstances, the fertilized egg usually implants around 6-8 days after sexual intercourse. The exact timing can be affected by factors such as ovulation time and sperm motility, potentially varying by 1-2 days. Detailed analysis is as follows:

If intercourse occurs when a woman is in her ovulation period, sperm and egg may combine in the fallopian tube to form a fertilized egg, a process that takes about 1-2 days. After the fertilized egg forms, it gradually moves toward the uterus while continuously dividing and developing, a process that takes approximately 4-5 days. Once it reaches the uterine cavity, the fertilized egg will search for a suitable location on the uterine lining to begin the implantation process, which takes about 1-2 days to complete.

Most women do not experience noticeable sensations during implantation, although a few may have mild abdominal cramping or slight vaginal spotting. These occurrences are generally normal physiological phenomena and require no special treatment. After implantation, the fertilized egg gradually secretes human chorionic gonadotropin (hCG), at which point pregnancy can be detected earlier via blood testing. Following a missed period, a pregnancy test strip can also be used for detection.

If you wish to learn more about the specific implantation status, you can undergo a blood test around 10 days after sexual intercourse or use a pregnancy test strip after a missed period to obtain more accurate results.