Possible allergy?

Yesterday morning I ate a rice cake with peanut butter and my lips were stinging and tingly. I thought it was a cold sore tingle, and didn’t really think anything of it because I’ve never had any issues with it before. Then last night I had a few Reese’s pieces in my ice cream, noticed it again but didn’t think anything of it, I was still thinking cold sore. Today I started eating my rice cake with peanut butter and immediately felt the stinging tingly feeling again. I started googling because I felt like I connected some dots. I’m not sure if some of it was anxiety induced but I started feeling my throat itch and then read further down where it said basically “beware a lump in your throat feeling”. So of course I felt a lump in my throat after that. I took a benadryl and I think I’m doing better now, I’m just scared and nervous. I’m 24, I’ve never had any allergies other than seasonal type stuff.