I'm on CD 43, still no AF, all tests BFN. My DH and I BD'd on CD9 (and not since, he had back surgery, so off-limits for a few months) so while it's not impossible for me to be pregnant, I just don't feel like I am. I called my doctor's office to see how long this could continue before I should be worried/go in for appointment and they said I should just continue to take my prenatals and if nothing has changed in the next 2 weeks to come in so they could do a blood test to either confirm or rule out pregnancy. Has this happened to anyone else? My doctor didn't seem concerned about having such a long cycle. I guess I just want to see if anyone else has been in this situation. I don't like to wait. I want to know, one way or the other.