my son has been coughing (i believe due to allergies), for 2 weeks and has been throwing up mucus for three days.  he runs and plays with a little runny nose during the day, but at night he coughs up flem.  he now has a fever, but i cant take his temperature.
Thanks for your question on Chat Doctor. I can understand your concern. Yes, possibility of allergic bronchitis is more likely. Coughing, phlegm and runny nose are characteristic symptoms of allergic bronchitis in child Chat Doctor.  Combination of anti histamine (levocetrizine or fexofenadine) and anti-allergic (montelukast) at nighttime is very effective. Inhaled bronchodilators (formoterol or albuterol) are also beneficial. So consult pediatrician and discuss all these. Hope I have solved your query. I will be happy to help you further. Wishing good health to your child. Thanks.