Girls, about a week or two weeks ago my daughter had rotavirus, she wa…

Girls, about a week or two weeks ago my daughter had rotavirus, she was throwing up, had diarrhea, didn't eat, endured for two days, they recovered, today suddenly her temperature rose to 37.5-38.0, there are no more symptoms, no phlegm, no vomiting, no diarrhea, no coughing, no loose stools... Could it be that we didn't fully treat rotavirus? I'm worried ?