I'm only relatively new to PCOS (Finally diagnosed a year ago) but I have very noticeable changes through my cycle. Either side of ovulation I'm really dry and during ovulation I have tons of EWCM. It lasts for about a week and before and after it it's really noticeable that I'm dry. I do take diabex for the insulin resistance too. I don't know if that's related specifically to the PCOS though or just my cycle because I've always tended to be like that.