Upper lip laceration and a cut on the inside. Now there's a hard lump/nodule the size of a rice granule inside my lip. Options?

So 25 days ago I got punched in the mouth area.My upper right lip split open and I also had a good cut on inner side of it.I went to the ER but the doctor decided not to give me stitches.My lips stayed swollen for a week but now I can feel a hard mass inside of my lip in between where the cuts occurred.Already visited a plastic surgeon and a dermatologist.I was told it's probably scar tissue that should soften with time and that the small scar could be improved with laser.I wanna restore my lip.