At that stage, if the couple has still not conceived, the best way to achieve a pregnancy, irrespective of age, is through IVF fertility treatment. This does not mean that the couple cannot and will not conceive naturally, and many still do, but it is a more active way of moving forward and with proven efficacy.
Investigations can be performed at an earlier stage if there are suspected problems. If the tests reveal blocked Fallopian tubes, significant endometriosis, and/or low numbers of poorly motile sperm, IVF is recommended without further delay.
There are tests to predict how a woman is likely to respond to the drugs used to stimulate the ovary in IVF, and to some degree how successful the treatment will be as there is a link between the number of eggs collected and the chance of having a baby.
Therefore, these tests were developed for IVF prediction and not to assess a woman's fertility - but people are increasingly using them to advise women whether delaying childbearing is sensible or not and to predict when the menopause may occur. There are no robust studies to support such predictions, and women and healthcare practitioners should be cautious in interpreting and extrapolating facts from studies predominantly undertaken in infertile women. Age, or more specifically female age, is the overriding factor for most couples and something we cannot ignore.
Source: Independent UK