<s>[INST] I feel at least 4 months ago. I hit my Lower mouth ,  under the gumline . five teeth back from the middle, right under I have a huge lump. You can't tell just by looking at me. It dose not hurt. My tounge does not recognize the difference. But when I push on my jaw I feel it. Like the size of a marble from the outside. But from the inside, it feels like half of a quarter size oval marble.how can I get rid of this. [/INST] HI. Any swelling remaining  after 4 months may need excision , I suppose , if the medical management fails to resolve this. I would advise you to visit a Oral Surgeon or an ENT surgeon to get this examined and decide the course of action . Just follow his advise.This is important as this lump can give complications later. If it has to resolve on its own , would have been done within 3 weeks of injury- now it is 4 months , you say. </s>