Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain the symptoms of chills, runny nose, headache long with phlegm seems to b due to upper
respiratory tract infection also known as common cold or can also be due to Influenza or flu..
I would suggest you to take
Acetaminophen for fever, antiallergics like Allegra or Benadryl,decongestants like Pseudoephadrine, mucolytics like Ambroxol..
Take decongestant
nasal spray containing
Xylometazoline, saline
nasal irrigation, steam inhalation and use a humidifier in your room..
Drink plenty of warm water and other warm fluids..
Avoid spicy and chilled foods and take a bland diet..
Do saline nasal irrigations and take sufficient rest..
In case of no improvement in week consult an Otolaryngologist and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.