Small purple bump on lips after filler. Can this be fixed? (Photo)

I got my lips done over 3 years ago and I noticed a small purplish bump (doesn't feel too big and I can squish it flat but it bounces back. You can see it in certain light better) that hasn't gone away and idk what it is. I'm not sure if it's a tiny bit of misplaced filler (maybe too close to surface of skin?) or a popped vein caused from filler, but I'm wondering if it can be fixed? I've gone to my provider twice for it and she tried poking with a needle but it didn't fix the problem.