decaf, I'm sure I read somewhere (probably on here), that a pregnancy is like chucking all your hormones up in the air and having them land any which way - or in other words, you could have textbook cycles pre-pregnancy, only to have haywire cycles post-pregnancy. That might mean that any blood results from pre-DS are worthless, and you need to have bloods done again.
Although having said that, it seems that your cycles have always been unpredictable. On the plus side, charting means that you are pretty sure you ovulate, that your LP is a good length, and presumably that your progesterone is high enough during the LP. Maybe take your charts in, in case your GP is interested.
I would ask specifically what hormones will be tested - LH, FSH, prolactin, testosterone etc.
I'd also consider looking into using EPO - or p'haps ask the doc about it - some are more receptive to herbals than others (DH was actually prescribed St. John's Wort once). Don't know anything about Clomid I'm afraid.
Be kind to yourself, decaf. Remember CD2 is easier than CD1.
Thanks for your thoughts, hippy and shaggy. I really thought decaf had cracked it this month, and I feel a bit despondent about my own chances now. Still, it ain't over til the Fat Lady Flo sings, as they say.