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Directors of WOOMB International Ltd.

The Board of WOOMB International Ltd is made up of four Australian Directors, four International Associate Directors, and the WOOMB International Spiritual Advisor.

The five Australian Directors are all Senior Teachers of the Billings Ovulation Method™, having worked for decades under the direction of Drs John and Evelyn Billings, the founders of the Method.  They have also worked closely with the key scientists involved in the validation of the Method, Professor James B Brown in Melbourne and Professor Erik Odeblad from Sweden.    They were trained by the Drs Billings to present Billings Ovulation Method™ Teacher Training Programs in Australia and internationally.  The mandate to ensure the authenticity of the Billings Ovulation Method™ wherever it is taught was given to these women by the Drs Billings.

Kerry Bourke

kerrybourke 100

Kerry was first accredited as a Billings Ovulation Method® teacher in 1980. She expanded her interest in ethical and moral issues by completing a Graduate Diploma in Theology from the John Paul II Institute in Melbourne. She is currently a Director of OMR&RCA Ltd and a member of the Education Committee. Kerry works actively to promote interest in and funding for the Billings Ovulation Method® in the wider Australian community. She has travelled to many countries helping to conduct Billings Method™ Teacher Training Courses. Her special interest recently has been the development of the Fertility Pinpoint™ online charting and teaching tool which is proving to be very popular both in Australia and overseas.

Marian Corkill

mariancorkill 100Marian was in the first group of teachers in Melbourne when the Drs Billings decided to spread the Method by women to women. She is passionate about ensuring that all Billings Ovulation Method® teachers have the ability to expand their knowledge and skills to ensure that the authentic Billings Ovulation Method® is offered to all. She has been involved in the development of the curricula for the WOOMB Approved Basic, Extension and Correspondence Courses for the training of teachers. She understands the importance of quality visual aids and works to ensure the availability of PowerPoint presentations suitable for teachers and medical professionals. She was the original lead person for OMR&RCA in having Billings Ovulation Method® training courses and seminars approved for quality points with the Royal Australian College of General Practitioners. Marian is currently the Chair of the WOOMB Board of Directors.

Marie Marshell

mariemarshell 100Marie has a strong interest in the spread of authentic training and materials, developed through her experience working with the Drs Billings through a decade of trips to China as the lead Billings Ovulation Method® trainer. This led to an enriched and expanded teaching system and formed the basis for the curricula for training now used internationally. With Marian Corkill she has travelled extensively training and up skilling teachers throughout the world. She is a member of the Education Committee and was the Study Leader for the Study on the Billings Ovulation Method® and the Achievement of Pregnancy.

Gillian Barker

GillianBarker thumbnailGillian worked in the laboratory headed by Professor James Brown where the hormonal validation of the Billings Ovulation Method® was completed. She was involved in the development of the Ovarian Hormone Monitor and it was through this work that she became involved in the Billings Ovulation Method® and subsequently trained as a teacher. Gillian worked on developing the curricula for the advanced training for Billings Ovulation Method® teachers and is involved in the ongoing development of programs and PowerPoint presentations for training both teachers and medical professionals. She has travelled to China, Pakistan and the USA to conduct teacher training programs and speak at Conferences. Gillian currently works for the University of Melbourne at the Mercy Hospital for Women on research into Premature Labour and Gestational Diabetes Myelitis.

Bernadette Davies


Bernadette 150Bernadette Davies B.App.Sc, graduated as a physiotherapist in 1978. She was accredited as a Billings Ovulation Method® teacher in 1990. In 1998 she completed a certificate in the “Biology of the Cervix” with Prof Eric Odeblad from the University of Umea, Sweden. Bernadette has presented teacher training programs in Adelaide since 2000. She has also assisted in presenting programs in Melbourne, Sydney, Hong Kong, Viet Nam, and Malaysia. She was appointed a member of the Education Committee of OMR&RCA in 2015. Bernadette has been a Tutor and Supervisor of the Billings Ovulation Method® Teacher Training Correspondence Course since 2003 and took over as coordinator of the course in 2018. In 2008, Bernadette was trained by the RACGP for Accredited Provider Status for QI&CPD activities and continues to be an EAR. In 2014, Bernadette was part of a team that set up the Fertility Fundamentals Clinic, the first Australian natural fertility clinic that incorporated fertility education and medical treatment as an alternative to IVF. She also completed the Practical Ministry Formation Program for the Archdiocese of Adelaide.