If ovulation has occurred, the egg will reach the fallopian tube in about ten minutes, thanks to the umbilical end of the fallopian tube. If there is no intercourse at this time, the egg will be waiting for the sperm in the fallopian tube and will survive for about twenty-four hours. After intercourse, the sperm will enter the fallopian tube in about six hours at the latest, where it will unite with the waiting egg to form a fertilized egg, which will enter the uterine cavity with the peristaltic movement of the fallopian tube. After implantation, it starts to grow and develop, and this is the whole process of sperm and egg union that forms the embryo in the clinical setting.