just ended birth control October 29th....

So I just ended my birth control October 29th on a Saturday. It was a Sunday to Saturday month end birth control. So far AF has not started and its Thursday the week into where AF should have at least started Monday maybe Tuesday latest. I have been TTC but I had thought I was already to far into ovulation to have a high chance to have been able to conceive. I have already taken two pregnancy tests the First Response 6 days sooner tests. The first the 26th of November and the second today the 1st of December. Both BFN. Whats going on????