Any stories or advice?

I'm currently CD36, my average cycle is 30 days, with the longest ever being 31 days. The last few months it's been 29 days since August. I always know the day it will start or it will come the day before I believe it will. I've been tracking my cycles for almost 3 years and I've never been this late before. Im trying not to get my hopes up, I tested on CD 30 BFN. I waited to test until this morning with a frer and BFN! I believe I ovulated on CD 18/19 and we BD'd on CD 17. So, feeling heartbroken but still a little hope as AF doesn't seem near, I have an appointment this afternoon with my OBGYN.

What do you all think, late cycle or could still be possibly preggo?