The Billings Ovulation Method® Association - USA (BOMA-USA) is the official delegate office in the United States representing the World Organization Ovulation Method Billings (WOOMB) which is headquartered in Melbourne, Australia.

BOMA-USA provides Teacher Training and re-accreditation in the authentic Billings Ovulation Method®, as well as promotional and educational materials such as CD's and books.

BOMA-USA has a Federal Tax ID number as a non-profit organization. We appreciate any tax deductible monetary donations to help defray costs associated with our efforts. Donations may be made either by check or credit card (Visa/Mastercard or Discover). You can also donate via PayPal by clicking on the Donate button below.

P.O. Box 2135
St. Cloud, MN 56302
FAX: 320-227-2532
E-mail: This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

Our Logo

Our logo symbolizes the natural beauty of a woman’s cycle.

The green symbolizes life, freshness, and nature. The purple adds elegance and energy.

This image reveals how the woman’s hormones rise and fall, preparing for the potential of human life in each cycle. Represented by a branch with a fertile ‘sprout’, the growing follicles lead up to Peak, a key sign of ovulation, and a marquis feature of the Billings Ovulation Method.

The branch begins off of the letter M, the third letter of the acronym BOMA, and coincides with the third phase of the cycle which is fertility. The branch then turns into an arch representing the fourth phase of the cycle where the hormones drop to bring the cycle to a close.

Contact Us

Billings Ovulation Method Association - USA

PO Box 2135
St. Cloud, MN 56302

Telephone: 651-699-8139
Fax: 320-227-2532

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