M2B - I had a really high progesterone reading when i had my BT and a low HCG so i had to wait till my progesterone dropped. My progesterone was at 260 first BT on a monday then dropped to 34 by wed. It has to get right back to 1 or 2 before AF arrives which for me was by the sat. So i guess it depends on how high your progesterone reading is. GL for friday there is still a chance!!