Problem: Chun-Ja, a 27-year-old G2P1011, delivered 28 hours ago via cesarean section, and you've just assumed her care. She is obese and had meconium-stained fluid at delivery. Her vital signs are blood pressure 102/61 mm Hg, pulse 126 bpm, respirations 28, oxygen saturation 96%, temperature 100.8°F, pain 6/10 in her lower abdomen, and a 4/10 for a headache. She states she has the chills and just "doesn't feel good." Her lochia is scant to small and rubra. What postpartum complication is Chun-Ja experiencing?