Extra 5 days of Letrozole

Breana

Today I went in for my CD12 ultrasound after taking 2.5mg letrozole on CD 1-10. For my last cycles for <a href="https://glowing.com/glow-fertility-program">IUI</a> this produced 1 mature follicle but this time there was nothing. My doctor decided to prescribe 5mg daily for the next 5 days and to come back for another ultrasound on CD18. Does anyone have a similar experience where all you needed was the extra boost of meds?

Thanks!