hello and welcome to health care magic,
Although it seems to be a benign infection which has subsided it would be prudent for you to consult an ENT who can examine the lesion and suggest a biopsy
perhaps so that a proper diagnosis and treatment can be done.
I have done more than a thousand biopsy and rarely it is serious but it pays to be safe than sorry
Meanwhile do not squeeze or meddle with the same and avoid spicy and oily foodstuff.
Dr Sriram Nathan