BBT. What do you guys think mine means?

Mariana

bbt at 5:05pm is 99.2 F (taken from mouth)

Checked again at 5:10pm and it's at 99.4 F (taken from mouth)

bbt at 4:00pm is 97.7 F (armpit)

bbt at 5:17pm is 97.5 F (armpit)

The thermometer is new btw.

How is bbt generally supposed to be during pregnancies? (Idk if I'm pregnant yet)

I've never checked my bbt before like this. HELP.