I need advice

Amanda 😍 • Mama to Jade & Seraphina ❤️1/5/18❤️6/3/19❤️

My baby has always been a quiet and content baby. she sleeps all night and she only cries when she's hungry and she's usually on a pretty good schedule. but today she's been fussy all day. I'll feed her and burp her and change her diaper and she's still super uncomfortable. she's not tires because she's slept all night and she even went to sleep 2 hours before her bedtime. please advise me I don't know what to do