Lip filler lump still there after 4 months, can it be harmful it I didn't get it dissolved? (Photo)

I had 0.5ml of versa filler injected and then went back later for another 0.5ml because the first round didn't do much s I noticed that I had a lump in the spot where the black mark is on my pic. It's small, probably a grain of rice or a tad bigger, doesn't hurt, can move when I mess with it, and isn't noticeable from the outside. It's still there after 4 mths. I feel like it may be getting a little smaller but causes me so much anxiety. Can this be harmful even if I didn't get it dissolved?