Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that the symptoms of cough and aches like flu can be due to viral infection only and the painful
white spots over the tongue, mouth and gums also seems to be due to it causing
stomatitis..
A small lump on the side of neck seems to be due to
swollen lymph nodes secondary to infection..
It does not seems to be due to wisdom tooth but is due to the ongoing infection only..
I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like throat swab culture and can help in diagnosis and treatment can be done accordingly..
As of now you can take anti inflammatory painkiller like
Ibuprofen to relieve pain..
You can gargle with numbing mouthwash containing Lignocaine..
Do cool compresses over the bump..
Avoid spicy and chilled foods..
For cough take cough suppressant like
Dextromethorphan..
Do warm saline gargles and suck throat lozenges..
Do steam inhalations..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.