A 28-year-old G1P0 woman at 38 weeks gestation presents with sudden onset of painful vaginal bleeding. She denies trauma. On examination, her uterus is tender, rigid, and hypertonic. Fetal heart tracing shows late decelerations. What is the most likely diagnosis?
✓ Correct Answer: Option B
The classic presentation of painful vaginal bleeding, a rigid and hypertonic uterus, and fetal distress (late decelerations) in a term pregnancy is indicative of placental abruption, a medical emergency requiring prompt intervention.