Starting from Monday night, my wife has been getting fever with chills and dizziness for about 3 days now. During daytime she is fine. Fever starts from around 8-9pm when she feels dizziness and weakness with gradual temperature rise, which is gone by the time she wakes up in the morning. She has low levels of vitamin D (<5ng/ml) for which she takes medications. Please advise what needs to be done in this case.