Ok, so, doc doubled my Letrozole this cycle and for first time had more than one follicle growing so had hope this time..a little history, I have PCOS and Agressive Endometriosis. 2 failed IUI's so far with letrozole and HCG inj. Before that, Clomid for 9 months with no success. So this time again, follicles on the left stopped growing at 14mm, and the one on the right was 24mm today but was a anuovulated.. Spelling may be wrong.