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Contraceptive MethodsOral ContraceptivesFamily PlanningPostcoital ContraceptionIntrauterine ContraceptionOral ProgestinsOvulation MethodContraceptive AgentsNational Health ServicesContraceptive MethodUnwanted PregnancyCervical CanalCervical MucusRisk PregnanciesSex BehaviorBlood CoagulationTemperature RiseFamily HealthMammary GlandBody Temperature