When is post-coital implantation bleeding to be expected? | When does implantation bleeding occur?

When is post-coital implantation bleeding to be expected?

The time of implantation bleeding after sexual intercourse differs and depends, among other things, on whether fertilization has occurred. Fertilization can still take place 2-4 days after sexual intercourse, as sperm are able to survive for several days. However, fertilization can also take place immediately after intercourse if ovulation has already taken place.

Once fertilization has taken place, a further 5 to 6 days pass before the embryo implants in the lining of the uterus. Therefore, there can be 5 to 8 days between the last sexual intercourse and the implantation bleeding. However, implantation bleeding does not necessarily occur, so it is not a sure sign of pregnancy.

Duration of implantation bleeding

The duration of an implantation bleeding can vary from woman to woman. Usually the implantation bleeding lasts only a few hours. However, sometimes it can last for several days.

However, implantation bleeding rarely lasts longer than about 5 days. The intensity of the bleeding is very low over the entire period, so that it is only a slight drop-like spotting.