Girls good night. Son woke up at 6 am with fever, peaked at 39. He ha…

Girls good night. Son woke up at 6 am with fever, peaked at 39. He had diarrhea five times today. He doesn't drink or eat, I give him water through a syringe, he drinks a little and the rest is excreted. The nurse said Ibuprofen and observe the child, I know what to do without her help. We did the vaccination against measles on the 14th, and there was no reaction for so many days, but now on day four it's like this... Please advise me what to do tonight, I will call a private pediatrician tomorrow. There are no hopes for going to the state clinic. What do you do in such cases?