BBT drop after BFP

I got my BFP at 9DPO and I take BBT every morning at 5:30am. AF was due yesterday.

This morning, my temperature dropped a significant amount (still above coverline) so of course I am freaking out.

I took another test and its still pretty positive.

I remember waking up at 1:30 for some reason and going back to bed.

I am scared because I am taking progesterone supplements so I really don’t want anything to go wrong and I need some reassurance, what do you guys think?