ovulation does not equal pregnancy though. The body releases progesterone as a way to say "hey, no need to send out more eggs, we already did it". It has nothing to do with making the body think its pregnant, just that the egg was already released.

I have an implant, which essentailly does the same things that HBC pills does (releases progesterone to make my body think its ovulated) except i dont get a week off every month or three. It does not trick the body into thinking its pregnant at all, it doesnt even release the hormones that make a body think its pregnant (hgc?).