Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
Yes it could be an allergy
and you may have to take some anti histaminic drug like cetrizine
to help it cure. Try keeping it clean and dry. Take some mild pain killers like paracetamol
until it heals.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, or want to further details about your query, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.