BBT help please???

Abby • 💙10/15/18 💙 8/13/21

Positive OPK on CD 20 but no obvious temp shift to confirm it?

The higher temps started on CD 13 started when the temperature got warmer here in Florida. The temperature of the room I sleep in went from 68 to 76 so that may have something to do with it?

Please help!