Help!

Linda • Mama to two baby girls named Blayne and Blaire. 🌙🌟 Husband and I own an A/C business.❄️ Cat lover 😽 Florida 🏖

Took my daughters temp rectally and it was 102.1 then I took it under her arm and it was 98.3. She’s two.

I’ve heard the rectal temp can be higher?