I know this is probably a dumb question but this has never happened before when I eat pickles. I ate…

I know this is probably a dumb question but this has never happened before when I eat pickles. I ate one of the pickles out the jar we been having in the fridge & shortly after I started getting 2 small raised areas on my bottom lip... Does that mean allergic reaction? Or could it be something else. I've never been allergic to any food that I know of. I have a Benadryl next to me incase it gets worse.