Day 35, a BFN and No AF

The title of this post pretty much gives it away. I still have not started and I am still getting a BFN. As of now I am assuming that I just did not ovulate this month. I am going to hold out until Saturday, test one more time then start the Provera if I didn't start already. Have I mentioned lately that I am frustrated with this whole stinking process? I think that from not on I am going to request the blood work every month no matter what. I can't stand this waiting game it drives me nuts. I need to know if I can at least expect my period.