17th June 2021

A 22-year-old lady presents with lower abdominal pain, fever and vomiting

A 22-year-old lady presents with lower abdominal pain, fever and vomiting over the past 3 days. Her last menstrual period was 2 weeks ago. Upon examination, her abdomen was soft and mildly tender over the lower abdomen. A pelvic examination found cervical motion tenderness.

Select the SINGLE most appropriate clinical diagnosis from the list below. Select ONE option only.