Low grade fever :(

Sommer 💙 • Mother of three boys!
This morning I was feeling a little tired and off so when I got home I took my temperature...it was 99.3...every where I read says to not let it get above 100...so nervous and praying it goes away soon! Gonna take a tyenol so it doesn't go up while I'm sleeping! Any advice besides keeping hydrated? Gonna call my dr in the morning!