My 4 yr old, weighing 25 kgs has fortunately turned COVID negative after 17-18 days but still has coughing which gets little intense during the night and early morning. Rest of the day he does just fine, no other complaints. Although when he coughs, he complains of throat pain. Can there be something I should be concerned about? Does he need another check up or something. I am just giving him ginger-tulsi-lemon-honey syrup in the morning lately, and very often steaming too. How do I know if he needs in-person check up or if he has what is called walking pneumonia! Can he have that without showing any other symptoms! Plz guide Doctor.