Having a wet dream is not implantation. Spring dreaming is an illusory behavior, while implantation is a real process that the fetus must go through in order to develop. Spring dream is the normal physiological and psychological sexual performance of sexually mature men and women, is to occur in the dream and sex-related behavior. Having a wet dream is an irresistible subconscious behavior that often occurs during puberty and is very different from normal human sexual behavior. Impregnation is a stage in the normal development of the fetus, and it occurs about a week after sexual intercourse. It is also a very complex physical and chemical process. Through normal sexual intercourse, sperm and egg meet to form a fertilized egg, which moves slowly into the uterine cavity and buries itself in the uterine lining, a process known as embryo implantation. This process is called embryo implantation. After successful implantation, the embryo will continue to develop, and if implantation fails, a biochemical pregnancy will occur.