Thanks for the valuable info you had given.I've taken a close look at your question & the reply and come up with the following answer:
The small painless knot under chin at the top of throat area you are having is suggestive of a enlarged lymph node.
Lymph node infection is called Lymphadenitis.It is a common complication of certain
bacterial infections such as streptococcus or staphylococcus.A biopsy and
culture of the affected area or node may reveal the cause of the inflammation.
The lymph node has enlarged because of your recent infection/flu that has caused you cold symptoms,sore throat,mild fever.
Usually there is no need of treatment & the enlarged lymph node subside by its own within 5-7 days or as the infection gets cleared.
If still the symptoms persists,then you need examination by doctor & following tests may be done:
-Complete blood count(CBC)
-Fine needle aspiration cytology(FNAC)
-Throat swab test
Antibiotics may be prescribed accordingly if a bacterial infection is confirmed.So for now I advice you to wait & watch for the next few days so to see if the infection/flu gets cleared & accordingly the treatment will be done.
Hope this helped
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