Sorry for late reply and inconvenience.
Thanks for all these additional information.
I understand your concern.
Well as you describe,it seems pharyngitis/tonsillitis.
And you should see an ENT specialist for a clinical examination,throat swab and culture,laryngoscopy for further evaluation and management.
Chances of cancer are less likely.
Other possible cause may include Laryngopharyngeal acid reflux.
So you should try OTC Zantac and Zyrtec.
Also steam inhalation and saline gargles can be tried.
Oral betadine rinse can be helpful to relieve throat discomfort.
You should start a multivitamin supplement.
Take warm drinks,lemon tea,ginger tea.
Avoid spicy,fried food.
Also avoid carbonated beverages.
Warm compresses on swollen lymph nodes are also effective.
Take OTC Motrin.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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