Sperm can live for about five days inside the uterus, so providing those two time frames collide, it can be pretty soon after sex. Hours, usually. Implantation occurs between 6 - 12 days. Different sources say different things, but it seems to be no fewer than six days and no longer than fourteen.
In short, it soon became apparent that a new stage of life â the teenage phase â was becoming a reality in America. American adolescents were displaying traits unknown among children and adults. Although the word teenager did not come into use until decades later, the teenage mindset dawned in the 1920s.
The phrase Generation Y was first used in a 1993 Ad Age article, while Millennials was coined by sociologists Neil Howe and William Strauss. As well as being comfortable sharing their entire life online, this is a selfish, self-regarding generation.