Typically, we recommend you seek medical advice if any of the following apply: If you are under 35 and haven’t fell pregnant after a year of trying. If you are over 35 and haven't fell pregnant after six months of trying. If you have been diagnosed with unexplained infertility by your doctor. If you have a known cause of infertility. If you're not sure if these apply to you, feel free to contact our Fertility Advice Centre on 1800 111 373 for personalised advice.