My 9 month old DS had/has an upper respiratory infection. Doctor put him on antibiotics last Wednesday. He finished them yesterday. His nose is still snotty & he is putting his finger into his right ear now ( was putting it in his left). Otherwise he is still his happy, normal self. Should I take him back to the doctor or wait? This is the first time he has been sick so we have been extremely lucky so far. Any advice will be appreciated. Thanks.