A 37-year-old woman presented in the OPD with the chief complaints of infertility. She was gravida 3, para 1 having a 13-year-old daughter and has a history of one miscarriage two years later. Social history: She is separated from her former husband and married again and is keen to conceive. Menstrual history: Menstrual cycle : Irregular LMP :  45 days ago Bleeding moderate, cycle lasts up to four days The patient does not have any other problems.

Her partner is 34 years old and is fit and healthy. What is the cause of infertility? What further investigations and management options would you suggest? (Answer is posted in the comment section below!) *This case is from the Editorial team of Docplexus and is meant for educative purposes only.