Bbt drop 6 dpo?

Kate

My last "peak" OPK reading was Jan 23 (also had a peak on Jan 22), I'm assuming Jan 23 was my ovulation day? Today I had a big drop in BBT. I haven't been tracking BBT very long, this is only our second cycle TTC.

Any idea what a drop like this could mean 6 DPO?

THANKS LADIES 💞