My six year old is really congested with a cough and now he says his eyebrows hurt. Sinus infection? Is there any OTC remedy since it is friday night

Symptom control. Children don't have forehead sinuses at this age but the ethmoid and sphenoid sinuses could cause forehead pain. Bacterial sinusitis in kids often has fever, nasal blockage, infected looking drainage, and cough especially at night. Suggest topical nasal decongestant drops, hydrate, humidifier, tylenol (acetaminophen) and/or advil, sudafed, sleep with head up. Sinus infection shows up as cold is starting improve.