RecruitingDrug trialEffect of Labetalol, Atenolol, and Nifedipine on Maternal Hemodynamics Measured by ICG in Early PregnancyThe purpose of the research is to characterize the effect of labetalol, atenolol, and nifedipine on maternal hemodynamics early in pregnancy. Patients will be given medication based on their hemodynamics and asked to return for a repeat measurement.