Review Question - QID 109771

A 42-year-old woman presents to her primary care physician for a checkup. She has been trying to get pregnant with her husband for the past 7 months but has been unsuccessful. They have been having unprotected intercourse daily during this time. She experiences her menses every 28 days. Her husband has 2 children from another marriage. Otherwise, the patient only complains of mild vaginal dryness during intercourse. The patient's medical history is notable for seasonal allergies for which she takes loratadine and a chlamydial infection which was treated in college. Her temperature is 98.7°F (37.0°C), blood pressure is 127/68 mmHg, pulse is 90/min, respirations are 15/min, and oxygen saturation is 98% on room air. Cardiopulmonary, abdominal, and pelvic exam are within normal limits. Which of the following is the most likely diagnosis in this patient?