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by micromacrofoot 1243 days ago
Breastfeeding works as a natural contraceptive, so I highly doubt it - babies would need to be on solid foods without breastfeeding, and that was much harder in the past then it is now.
1 comments

Only for a few months and it's still not 100% effective.
more like 6 months, and even modern contraceptives are not 100% effective