What is this spot in my lip? Does it have anything to do with fillers? (photos)

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in-person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.

It would be unusual for new symptoms to develop a few months after treatment.  If the area does not heal fully or worsens, visit with your PCP for an evaluation.

Hello and thank you for your question. We would always recommend a face to face consult however in this case this looks as though it could be a cold sore forming on the lip- please seek a face to face opinion of a doctor.
We hope that answers your question. Best wishes