Thanks for writing in.
Yes, this does sound like an allergy
. It is often difficult to identify what you are allergic to apart from things like sea food which cause allergies in a lot of people. The white marks could be healing skin ( since you said you had a pretty bad reaction last month) . I would suggest you have Tablet Cetrizine
10 mg once a day for 2-3 days and you should be fine.
Hope this helps