My son from the past 2 days coughing with lot of kuff inside and vomiting frequently during day time and night time.and has running nose.his mom also suffering from coughing (medicine-Macberry XT)since 3days.went to doctor.he prescribed nasivionS ambrodil-s .sinerest AF and advent dry syrups.but it's not controlling.doctor told lung congestion happened .we need to do nebulization.wt shd I do.son is not eating anything and he vomits alot.its scary for me as it happened 1st time since he was born. Note- No fever and he is active aswell.