While assessing a patient who gave birth 5 hours ago, the nurse finds that the woman has completely saturated: pad within 15 minutes. What is the nurse's first action?

Assess the woman's fundus and massage it if boggy

Assess the woman's pulse and BP for signs of hypovolemic shock

Call the woman's primary healthcare provider

Begin an IV infusion of Ringer's lactate solution and administer oxytocin