Lip filler - what is this?

I got a half syringe of lip filler in March. I had minimal bruising and swelling. A month later a lump and the injector looked at it and said to just massage it and it should go away in a few days. Fast forward to today six months later and it looks like this. What the heck is it? Injector does not work there anymore she went back to her primary job. Do I need to have this dissolved before redoing my lips? It doesn’t hurt but it looks so odd.