Comparison of DuoFertility, LadyComp/BabyComp and Clearblue Monitors

The investigators plan to recruit 30 women who are currently trying to conceive, and ask them to use the 3 fertility monitors for duration of 3 menstrual cycles. Additionally, during the study the women will be asked to fill in online questionnaires to assess the usability of the monitors. As the spouse is often a critical partner in the purchase decision and compliance, the investigators will also ask the spouse to complete similar online questionnaires.

Inclusion criteria

• Participant is willing and able to give informed consent for participation
• Females aged 18 to 44 years
• Have a body mass index (BMI) above 19 and below 29
• Regular menstrual cycles, i.e. no greater than 7 days difference between the shortest and longest cycle in the last 6 months
• Minimum menstrual cycle 24 days
• Maximum menstrual cycle 33 days
• Female participants willing to use the 3 fertility monitors for at least 3 cycles.
• Willing to fill in regular questionnaires and study diaries

Exclusion criteria

• Women aged younger than 18 years, or older than 44 years
• Have a BMI less than 18 or greater than 29
• Any diagnosed systemic illnesses, including but not restricted to thyroid disease, diabetes or inflammatory diseases
• Polycystic ovary disease
• Endometriosis or other pelvic pathology (including proven tubal disease)
• Taking steroids, including oral contraceptives or anti inflammatory drugs