Lack of money, building a career and not finding the right partner are all reasons why women may leave having a baby until later in life.
Many will go on to have children naturally but for others conceiving can be a challenge as they get older.
So should teenagers be taught more about fertility issues in school?
Victoria Derbyshire spoke to Dr Geeta Nargund, Medical Director at CREATE Fertility which treats couples with fertility problems and actress Tina Malone, who had her first child at 18 and her second at 50.
Dr Nargund explained how she was pioneering the UK's first fertility education programme in schools.
