Baby planning time - Ejaculation

During sexual intercourse, sperm are ejaculated from your partner's penis into your vagina In one ejaculation, there may be more than 300 million sperm.

The sperm are ejaculated into the vagina at a speed of up to 500 cm (200 inches) per second.

Once inside your body, the sperm begin the hard work of locating your egg and fertilising it.