Your child is suffering from respiratory tract
infection. It probably started as as upper respiratory tract infection and progressed to lower respiratory tract infection. You have mentioned that your child was "miserable". This itself shows he had disturbed sleep and breathing difficulties. Please take him immediately to the hospital, get his complete blood count
done along with chest x ray. If he is not taking well orally, he needs to be given fluid through iv line. He also has to be started on antibiotics. His temperature should be brought down with paracetamol
and if required tepid sponging. His oxygen saturation
needs to be monitored and oxygen therapy
to be administered based on his clinical condition. Since he required good monitoring,care and supervision, please take him to the hospital.
Wishing your child a speedy recovery.