Bbt climbing...12dpo, neg hpts

Nicole • 30yo ttc#1 w/Dh. baby dust to all
Hi!
I have a 13 day luteal phase, and bu clockwork, 12dpo my bbt drops, ns more dropping 13dpo.
However, this cycle is not dropping-- it fluctuates a bit but went UP today- 12dpo.
All hpts are huge bfns.
Any thoughts? Good sign? Anyone who charts bbt have this with bfns that turned into bfps?
Top pic is this cycle, next two are typical cycles.