Hi..
Welcome to HEALTHCARE MAGIC.
I have gone through your query and can understand your concerns..
As per your complain the symptoms of
high fever, headache, cold and
swollen lymph nodes seems to be due to
Influenza commonly known as Flu and is a viral infection..
As your boyfriend had the infection, you have communicated the same from him..
As the viral infection runs its course and it will get resolved gradually on its own, so as of now you can start taking supportive treatment like antibiotics like
Augmentin or
Azithromycin to prevent bacterial infection secondarily..
Take anti-inflammatory painkillers like Ibuprofen..
Take Tylenol for reducing fever..
Take decongestants like Pseudoephadrine..
Do saline nasal irrigations..
Avoid chilled foods..
Do steam inhalations, warm saline gargles and use a humidifier in your room..
Sip on plenty of warm water..
In case of no improvement in 5 days consult an Otolaryngologist and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..