Newbie needs advice.

Okay. To start I got my nexplanon removed on Nov 18. AF showed up on the 21st. I peak ovulated on cycle day 19. Now on cycle day 32. App says AF due on Saturday. Still no BFP
Am I texting too early? 
Why is my cycle too cray to be pregnant?
I'm new to this TTC thing and have no idea how this works.