Related terms:
nfp
abstain
infertile
unprotected
avoid pregnancy
ovulation
infertile phase
barrier methods
pregnancy rates
cervical mucus
failure rate
cervical
per year
fertility
fertility awareness
periodic
birth control
family planning
breastfeeding
natural family planning
reproductive
effectiveness
pregnancy
methods
catholic church
cycle
catholic
Wikipedia sources:
Calendar-based methods
Comparison of birth control methods
Natural family planning
Fertility awareness
Context for words:
periodic
abstinence
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