Is it normal to feel your lip arteries with your tongue after Lip Filler? (photos)

When I got lip filler for the third time 4 years ago I ended up with a bump on my lip and I remember feeling a line sticking with my tongue out on my left side inside my lips. My doctor tried to dissolve the bump, but it never really went away. Cut to 5 years later and I dissolved my filler and this bump is still there and I realized that long line I felt and still feel is my artery. I can feel the artery on my left side of my bottom mouth too. Is this normal? Is this bump scar tissue?