I got 0.8ml Juvederm injected into my top lip 3 weeks ago today. Should I panic?

I recommend following up with your injector. This may be superficially placed filler, which can be reversed with hyaluronidase. I hope this helps!

You need to follow up with your injector. It's possible what you see is product, but also possible there may be an infection present. I couldn't say for sure without photos, and an in-person evaluation would be better. Be sure to explain everything to your injector the same way you did here. Best of luck to you.     

I would return to your injector for an evaluation/examination. This would be a difficult question to answer over the internet without an actual in-person exam. Good luck!

I recommend meeting with your injector for an evaluation.  An examination is necessary to determine what the origin of the spot may be.   You will want to note when the spot appeared after injection.

Please follow up with your treating physician for an examination and discussion of needed treatments.  It could be filler, but could also be and infection.  It is impossible to tell without a photo.

You need to see your injector to determine what is going on.  It could be an infection, it could be filler.  Hard to say.