weird lump feeling in bottom left gum of my mouth after wisdom tooth extraction

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OK so I got all 4 of my wisdom teeth taken out 2 days ago and my mouth is not numb anymore but after my mouth wasn't numb I noticed a lump like feeling in my gum and its been the same since then and I'm worried this is not normal. I don't seem to have any swelling so I don't think it's that. Help anyone?