[lilbitcrunchy]

How often are you taking the opks? My only thought is that perhaps you caught the downward slope of the surge. Or that your body tried to O and did not so it surged again. Did you start taking the prog over the weekend? That can cause the tender boobs.

I wouldn't assume you couldn't temp. You only need 3 hours and I did it with a night nursing toddler so maybe it's worth a shot. GL!