my son is 6 years old and was in the hospital for really horrible sinus infection, he literally could not breathe out his nose due to his nasal passages swelled shut, he had extremely high fevers, sore throat, blisters in his mouth and tongue swollen and finally tested positive for mono he was in the hospital for over a week finally sent home on antibiotics which he had to take for another 17 days after he was released this was back in May 2016 it is now March 2017 he did get better but still is very fatigue and now had started running fevers again Dr seemed to think he had the flu when i took him in to his peditrican it is now a week later still very fatigue and still runny fevers and complaining his head hurts what would you recommend I do?