One in six couples globally struggle with infertility
Female fertility peaks at 27 and started to decline at 28, by the time they reach 35 their fertility has reached low levels.
Once a woman reaches 40 they statistically have a five per cent chance of having a child naturally.
Invitro Fertilisation (IVF) was created by reproduction pioneers Dr Robert Edwards, Patrick Steptoe and Jean Purdy.
The first IVF child was born on July 25, 1978 called Louise Joy Brown.
Since then at least eight million babies have been born globally.
IVF success rates sit at about 30 per cent, according to latest figures.
Intracytoplasmic sperm injection (ICSI) was developed in the 1990s
Half a million babies have been born each year from IVF and ICSI globally
National Institute for Clinical Excellence (NICE) recommends UK couples should be offered three cycles of IVF treatment on the NHS.
To be in with the best chance of conceiving, experts say couples should have sex regularly.
Experts say if you have been trying for two years and have had no success, visit your GP and ask for fertility tests.