Thank you for your question.I am Dr. SH and will be helping you out with your concerns today.I am sorry to hear about your problem.
This seems likely to be a viral infection or could be related to smoking as well.
I myself have had this problem very frequently, at least once a year.
This usually goes away on its own.
Just keep applying OTC bonjela or any OTC brand that would help with this (you can ask your local pharmacist to help you).
This should go away in a week or two at the most.
Let me know if you have more questions.Please do submit a rating when you are done.Kindest regards