Protocol for determining fertility while breastfeeding and not in cycles

Fertil Steril. 2005 Sep;84(3):805-7. doi: 10.1016/j.fertnstert.2005.03.042.


A protocol was developed and evaluated for nonovulating breastfeeding women to determine potential fertility with an electronic hormonal fertility monitor. The amount of required abstinence (i.e., days of potential fertility) through the first menstrual cycle indicated by the fertility monitor was significantly lower (17% of the total days) compared with the amount of abstinence (50% of the total days) indicated by the self-observation of cervical mucus.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Breast Feeding*
  • Cervix Mucus / chemistry*
  • Cervix Mucus / physiology
  • Female
  • Fertility* / physiology
  • Humans
  • Ovulation Detection / instrumentation
  • Ovulation Detection / methods*
  • Pilot Projects
  • Retrospective Studies
  • Sexual Abstinence / physiology