RecruitingBehavioural interventionTelehealth and Remote Blood PressureThe purpose of this research study is to compare the management of chronic hypertension during pregnancy using telehealth visits with blood pressure telemonitoring and health coaching as compared to standard in person clinic visits. The study involves pregnant woman aged 18-45 who are receiving care for chronic hypertension. Participation in this research study will last until their baby is delivered. The number of in-person clinic visits depends on the participant's treatment assignment. Those assigned to telehealth visits will have telehealth visits alternating with clinic visits every two weeks until the end of pregnancy week 31. Those assigned to telehealth visits will also have five sessions with a health coach via telephone or video from the time of enrollment until the end of pregnancy week 36.