A 23-year-old female with primary infertility presented with clinical and ultrasound features of PCOD. Serum prolactin levels were also raised. All other parameters were normal. After treatment of hyperprolactinemia, she was started on ovulation induction with CC 100 mg and metformin.

Her ET was found to be only 6 mm on D13, and she was given HCG trigger as her dominant follicle was by then 19 mm. She did not conceive. What should be done to improve her ET to become optimum for implantation in the next cycle?