Facts After ejaculating, male sperm can survive inside the female body for up to 72 hours, while an egg is available to be fertilised for up to 24 hours after ovulation. Infertility affects around 10% of the population. 20-30% of infertility cases are caused by the man, while around 30% of cases represent a mutual problem. 20% of couples in the UK trying to conceive will succeed within one month, around 85% will conceive within