About 7 weeks ago, I was eating outside, when all of a sudden I felt my lower
lip swell. At that very moment, there was a wasp buzzing around my face so I immediately thought it may have been a sting, even though it didn't hurt. It was only swollen to a small lump on one side, and looked a bit like a blood blister. It got slightly bigger throughout the day, but since then gets bigger and smaller in size, depending on whether I accidently bite it or not!