My 4 yr old had her flu shot 2 days ago

Tracey🦉 • Wife and Mother of 3 Girls. 7 yrs, 3 yrs, and 1 yr old. SAHM, obsessed with photographing my kids 💜
My 4 yr old had her flu shot 2 days ago and today has a fever of 101. Can it still be from the flu shot or is it probably something else ?