What is the most likely cause of abdominal pain in a 35-year-old who is 10 days postpartum?

The most likely cause of abdominal pain in a 35-year-old who is 10 days postpartum is endometritis. This condition is an infection of the endometrium, which can develop following childbirth, especially if there were complications such as prolonged labor, cesarean delivery, or retained products of conception. Symptoms may include fever, foul-smelling vaginal discharge, and abdominal pain, which aligns well with the scenario described.

In the postpartum period, the uterus undergoes significant changes, and if bacteria enter the uterine cavity, they can lead to endometritis. This condition typically presents within the first two weeks after delivery, making the timing in this case particularly suggestive of this diagnosis.

Gastroenteritis, while possible, is less common in this specific timeframe as a result of childbirth and would usually present with more gastrointestinal symptoms like diarrhea and vomiting. Cholecystitis can occur but is not specifically linked to postpartum complications and more commonly arises in patients with risk factors such as obesity or prior gallbladder disease. Appendicitis could also present with abdominal pain but is less likely to be specifically associated with the postpartum state. Overall, the context of the recent childbirth and typical timing makes endometritis the most probable cause of abdominal pain