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Unexplained infertility is diagnosed after the other causes of infertility have been excluded. It accounts for about a quarter of all cases of infertility. If you have unexplained infertility and have been trying to get pregnant for less than three years, your chances of falling pregnant without treatment is as much as five to ten per cent per month. If you appear to have unexplained infertility and have been trying to get pregnant for more than three years, your chances of getting pregnant without treatment are around one to two per cent each month, so you will probably want to consider specialist treatment as soon as possible.

For younger women, a ‘wait and see’ policy can be adopted as some will conceive naturally, particularly if they have been trying to get pregnant for less than three years. Where you are older or the infertility has been present for more than three years, other options should be considered. The treatments are ovulation induction or to use assisted conception techniques like IVF.