PregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalPregnancy, EctopicBehavior, AnimalPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdFeeding BehaviorPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondPregnancy in AdolescencePregnancy Complications, NeoplasticHealth BehaviorSocial BehaviorPregnancy Complications, InfectiousBehaviorSexual BehaviorAbortion, SpontaneousPregnancy, UnplannedPregnancy ProteinsPregnancy, UnwantedPregnancy, High-RiskSexual Behavior, AnimalGestational AgeMaternal BehaviorPregnancy Complications, HematologicChild BehaviorInfant, NewbornAdolescent BehaviorExploratory BehaviorPregnancy, ProlongedPre-EclampsiaPlacentaPregnancy, TwinFetal DeathChild Behavior DisordersAbortion, InducedUterusBehavior TherapyPregnancy, AbdominalPregnancy Complications, ParasiticPrenatal Exposure Delayed EffectsPregnancy MaintenancePrenatal CareEmbryo ImplantationUltrasonography, PrenatalStereotyped BehaviorEmbryo TransferFertilization in VitroMaternal-Fetal ExchangeParityTime FactorsBirth WeightRisk-TakingAggressionRisk FactorsChoice BehaviorAgonistic BehaviorQuestionnairesProgesteronePregnancy Reduction, MultifetalMaternal AgeCesarean SectionHypertension, Pregnancy-InducedNesting BehaviorLactationFetal Growth RetardationMotor ActivityPremature BirthProspective StudiesInfertility, FemaleTwinsAbnormalities, Drug-InducedFetusFetal DevelopmentSelf-Injurious BehaviorMaternal ExposureLabor, ObstetricDeciduaCongenital AbnormalitiesObstetric Labor, PrematurePrenatal DiagnosisSocial Behavior DisordersAppetitive BehaviorChorionic GonadotropinFertilityDiabetes, GestationalMothersCohort StudiesTrophoblastsAbortion, TherapeuticPredatory BehaviorHealth Knowledge, Attitudes, Practice