Kristie I was put on Metofrmin and Clomid to conceive my DS. I was supposed to have the Day 21 blood test, but I had been taking my temp and knew I hadn't ovulated. I think it was close to Day 28 before I ovulated. I was so glad I had been taking my temp though, as if I hadn't I would have done the Day 21,which would have shown no ovulation, and then taken the Provera to bring on AF. When I told my ob (after the BFP), he said that taking Clomid can result in late ovulation. So my advice is to take your temp. I guess you could wait for whatever you consider to be a reasonable amount of time for O to happen, and if you don't then take the Provera (if that's what your doc prescribes to bring on AF).