Hi,
With DS I took it for 4 cycles 50mg, on cd2-6. I had 21 day bloods done for 3 of those cycles and my progesterone results were; cycle 1 - 49, cycle 2 - 11 (no ov) cycle 3 no bloods done, cycle 4 - 45 and i got my bfp that month. I think I ov'd on cd16 when we conceived.
Good luck!