Safe Period
Of stage and menstrual cycle.
That time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation).
This concept's ID is @1~77570
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Of stage and menstrual cycle.
That time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation).
This concept's ID is @1~77570