Just had the scare of my life

Earlier this evening my LO was acting fine and then started to get fussy and was crying for a good ten minutes . I couldn’t pick her up cause my hands were covered In dough . Once my hands were cleaned I picked her up and she just seemed lethargic and was really responding to anything . So

I freaked and took her to the ED . While we were waiting she started to smile and was getting back to her normal self . Her vitals were good no fever . So they didn’t know what happened and discharged us and told me to follow up with the pediatrician. I just am so worried about her that something is wrong . I’m gonna be up all night watching her now