Delayed hypersensitivity reaction after Juvederm 6 months ago? (Photos)

Almost six months ago, I had lip injections, and it was my first time. Everything seemed fine, until I developed what seemed to be a cold sore 7 weeks ago. After it healed, I noticed a hard pea sized lump in the area of my lip where I had the “cold sore”. The lip injector thought the filler might have migrated, and tried to dissolve it, but it didn’t work. It’s only noticeable when smiling, or stretching my lips, however I’d like it to go away. Is this related to the filler (juvederm)?