AF like spotting but BBT went up?

Va

Hey guys, could use some input. I’m confused.

I had AF like spotting yesterday but light brown & light pink a few nights before after sex.

AF is due tomorrow and I think she is for sure coming but when I took my temp this morning, it spiked up again rather than dip down further & im still well above the coverline.

I put a tampon in yesterday thinking AF was going to show up early but when I took it out, there was only a little bit of AF blood.

What gives with the temp spike? Think it’s still possible to have conceived?