Thanks for posting your query.
You are most likely suffering from acute bacterial pharyngitis
along with lower respiratory tract
Presence of phlegm and respiratory distress
suggests the diagnosis.
You should consult with internal medicine specialist and ENT surgeon simultaneously and should go for thorough check up.
You should go for complete hemogram, throat swab culture & sensitivity and chest x ray
You should take complete antibiotic therapy, mucolytics and decongestants.
You should avoid oily foods and cold drinks.
You should also perform gargles three times in day; a glass of luke warm water with a pinch of salt.
Dr. Mayank Bhargava