Girls, hello! Son has been coughing frequently since yesterday, his le...

Girls, hello! Son has been coughing frequently since yesterday, his left eye turned red and started watering, nose is runny with phlegm. There's no fever. But he's restless. He woke up several times during the night from coughing. I don't even know what to do or think about it. I clean his nose and apply Aqua Maris drops, wipe his eye with tea (my husband's sister is a doctor, she advised me over the phone), I put Viberon in his bottom last evening, because I thought his temperature was rising like that. What could it be? Has anyone encountered this? Could it be an allergy? But my son is lethargic. If anyone is in Shymkent