Spontaneous conception

{{distinguish|Spontaneous conception (psychology)}}

{{one source |date=April 2024}}

Spontaneous conception is the conception and birth of a child naturally, without the use of in vitro fertilisation or other forms of assisted reproductive technology. There is an overall 18% chance of spontaneous conception after an in vitro fertilization (IVF) treatment, but that chance rose to 37% among younger women (less than 27 years). The likelihood also depends on the sperm performance of the man and the egg count of the woman.{{Cite web|url=http://newsimg.bbc.co.uk/1/hi/health/253374.stm|title = BBC News | Health | Natural pregnancies for 'infertile' couples}}