my dear pls bring her to a pediatrician tomorrow as soon as the clinic opens. if she's not having other sign and symptons of flu, cough, vomiting, etc, it could be urinary tract infection, viral fever, etc. its sat tomorrow, most clinic open only half day. you go early so that if the pediatrician decides to do any urine test or blood test, dependng on what test, the result will be out before they close. if got any bacteria infection, *touch wood*, then can treat early mahh.