PLE-4120

A 30-year-old G2P1 woman, who is on her 18th week of pregnancy, came to you for her prenatal check-up. She is asymptomatic, and the physical examination revealed a blood pressure of 150/90, heart rate of 80, and respiratory rate of 19. The rest of her physical examination was otherwise unremarkable. She claims that this was the first time she had an elevated blood pressure. What is your initial diagnosis?