Hi, Thanks for using the HCM.
from your history your child seems to be having URTI, some times even ear will also be affected as there is connection b/w ear and nose, novamox
is a antibiotic, it should be taken regularly for 7 days as your doctor has prescribed it, as you have already missed a dose, its ok, continue remaining dosage, if your childs condition worsens consult your doctor, otherwise continue same medication.
Hope I have answered your query. If you have any further questions I will be happy to help. Thanks get well soon....