This is my first <a href="https://glowing.com/glow-fertility-program">IUI</a> cycle and I took letrozole CD3-7. I went in today for a CD10 follicle scan and labs and was told they see no dominant follicles yet. Is it too soon maybe? I have Pcos and my cycles are normally every 31 days with occasional ovulation naturally. Last month I went in for an HSN on CD9 and was told I had two follicles one 10.5mm and a 9mm. Is letrozole going to mess with my cycles? Thanks in advance