B.D. is a 29-year-old G3P2002 with a history of two previous…

B.D. is a 29-year-old G3P2002 with a history of two previous normal pregnancies and births, with newborns weighing 7 ½ lb and 8 lbs. After a 10 hour first stage and a 25 minute second stage, she delivers her placenta after 10 minutes. A minute later you observe bright red, brisk bleeding from the vagina. What is your first action?