I think AF had come by the time I saw the OB.. and he had told me to go for the test on day 21. And he compared the test result with my chart, and it all seemed to match up. hehe. I guess he didn't retest, coz my chart showed the temp rise etc that goes with progesterone, and I got AF 2wks later. It was actually my first cycle on Metformin, that's why we were testing.