Pituitary Hormones, AnteriorPregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalHormonesPregnancy, EctopicPregnancy Trimester, FirstThyroid HormonesFollicle Stimulating HormonePregnancy RatePregnancy Trimester, ThirdLuteinizing HormonePregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondGonadotropin-Releasing HormoneParathyroid HormoneGonadal Steroid HormonesPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousAbortion, SpontaneousPregnancy ProteinsReceptors, Thyroid HormoneHuman Growth HormonePregnancy, UnplannedPregnancy, High-RiskGestational AgePregnancy, UnwantedAdrenocorticotropic HormoneProgesteronePituitary HormonesPregnancy Complications, HematologicPlacentaInfant, NewbornEstradiolPre-EclampsiaUterusPregnancy, ProlongedPregnancy, TwinFetal DeathTriiodothyronineAbortion, InducedEmbryo ImplantationFertilization in VitroJuvenile HormonesPregnancy, AbdominalChorionic GonadotropinPregnancy MaintenancePregnancy Complications, ParasiticHormone Replacement TherapyEmbryo Transfer