How common is it to O at a certain dosage of Clomid one month, and then not the next? I just started last cycle at 50 mgs, and I O'd with it. So this cycle I am at the same dosage and just assumed it would work again, but my doctor still wants me to check my progesterone on CD21-23 to make sure. Is it common that a dose that worked the prior CY would then not work? It's hard for me to tell when I O otherwise b/c I am not temping and I always have - OPKs no matter what! UGH!

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Kris, Mom to
Caroline, born July 17, 2003,
Will, born November 11, 2004
& Sam, born June 9, 2007