A 30-year-old female presents with severe lower abdominal pain and vaginal bleeding. She has a positive pregnancy test. On examination, her blood pressure is low and her pulse is high. What's the likely diagnosis and the next steps?
The patient's symptoms suggest a ruptured ectopic pregnancy, a life-threatening condition. Immediate intravenous access and fluid resuscitation should be established, and emergent obstetric/gynecologic consultation is necessary. The patient will likely need emergent surgical intervention, usually laparoscopic surgery, to remove the ectopic pregnancy and stop the bleeding.