It is a relatively normal phenomenon for sperm to be ejaculated into the body and then come out. This is because the semen ejaculated by the penis forms a pool of semen in the posterior vaginal vault, which closes automatically when the penis is withdrawn from the vagina. A small percentage of good quality, viable sperm is able to swim through the cervix and uterine cavity to reach the fallopian tubes, and when it meets and unites with the egg in the fallopian tube, it leads to successful conception. While those with poor quality or excess semen will be expelled from the body with the vaginal discharge of the woman. This is why it is normal for sperm to be ejaculated into the body and then flow out.