My son came down with cold like symptoms on Monday. Temp of 99.9, sore throat slight cough. This morning he woke with very red eyes though no discharge and a deeper cough. No fever. A bit congested. I am worried about conjunctivitis. Could the eye redness be a result of the virus and not Conjunctivitis? He is also a swimmer and had practice this morning. He is 15 years old.