CAMBRIDGE, England--(BUSINESS WIRE)--One in six women in the UK have difficulties conceiving – a figure which is predicted to rise to one in three by 2020. Many women turn to costly, invasive fertility treatments such as IVF, which typically has a success rate of 20%. DuoFertility is a groundbreaking new fertility monitor which helps women to maximise their chances of conceiving naturally without resorting to fertility treatment.