Bbt tracking

Brittany • Have a beautiful baby boy 👩‍👦 09/10/18 Happily married 03/13/21 Rainbow Baby Due 08/08/22

If your tracking your bbt, what's the average range before period? I just started for myself yesterday but I feel like it's high when my period is 3 days away, I don't believe I've conceived cause cervix is low and firm. Yesterday when I tracked I was 99.7°F (37.61°C) and today I'm 99.8°F (37.67°C). Google says 98°F is average....

Just wondering so I know for next cycle