I've read through his posts and will look at them again. Now, I'm pretty confident that I understand the basics of Femara and Clomid. I will admit I still am perplexed how follicles will grow without having the normal estrogen levels. It just shows that the standard medical text explanations aren't as accurate as some think they are. I remember a doc who was TTC on another board years ago telling that the E2 level of a follicle reached 200 for 48 hours and that is what triggered an LH surge. Well, I had personal experiences (b/w and u/s) that proved that medical text explanation wrong! I know there were other factors involved in triggered an LH surge since I could surge with lower levels for shorter periods of time. And I'd seen other women whose experiences disproved that theory, too.