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• Fertility
  • Facts about Fertility
  • Pituiary and Ovarian Hormones
  • The Cervix
  • The Behaviour of the Cervix (animation)
  • The Behaviour of the Cervix (image sequence)
  • The Ovulatory Cycle
  • The Length of Ovulatory Cycle
• Billings Method
  • Understanding the Billings Method
  • Charts
  • Observations, Charting and Rules
  • Variations of the Cycle
  • Achieving pregnancy
  • Breast Feeding
  • The Slide Rule
  • Abstinence
• billingsMentor
• Contact

Animation of the Ovulatory Cycle

Reproductive Organs WAIT . .	Control step by step or	Billings Method WAIT	Speed Control
			FAST SLOW

Hormone Colour Codes
Luteinizing Hormone (LH)	Follicle Stimulating Hormone (FSH)	hCG*	Oestrogen	Progesterone
* human Chorionic Gonadotrophin