Taking a day off, my child has a fever

I'm so sorry, I can't help it today. My wife has back pain and can't take care of the baby. The child has actually been sick for several days. He just had his IV removed yesterday, and he had stopped having a fever and was almost better. But today he suddenly developed a fever again, and it's 37.7 degrees Celsius now. I have to take him to the hospital right away. I'm so sorry...