So many helpful new posts here!! 
Hey biggiwant, I'd recommend that you get on birth control to help with your PCOS, ask your doctor which brand works for you! Mitosis is your cells duplicating. The effects of P and E are actually too complicated, as is the endocrine system, but it is E and the growth hormones that mainly cause breast development. You can refer to the images posted on page 2. As for the nature of BO, I'm still not sure... The hormones in it should depend on when the cow is slaughtered, because the bovine estrous cycle looks kinda like human's, with ups and downs in E and P levels. It also matters whether the cow is pubertal or has already reproduced. Surferjoe, do you know anything about this?
This cycle: I have been consistent with the program, and added in noogling just because I had more time this week. And I got results! Today I measured at 93-94cm. I have been very anxious and depressed though, and it is definitely because of the BCP (300 micrograms of progestin, 3mcg E).
I think it's a good idea to take BO with BCP because it sends your body into an artificial luteal mode with raised body temperatures. Still not sure what Miss Ellen meant by 'letting the follicles grow’, because BCP suppresses LH and FSH, so the follicles cannot grow past the third stage to have the estrogen-producing layers (theca and granulosa). And of course BCP won't let ovulation happen, so a corpus luteum (releasing P and E) will not form. So my question is: if on BCP, what is the point of starting to take BO on day 12? This should only work for natural cycles. Does anyone have ideas on this? 