There is a small granuloma in the abdomen of the tongue. Generally speaking, granuloma is caused by inflammation and accompanied by pain. You can check yourself for redness and swelling. You may have an inflammatory reaction because of the obstruction of the sublingual gland duct, or you may have been injured. As for your symptoms, the onset time is very short, only one week, so it is probably caused by acute inflammation. Don't panic.
In view of this, it is generally recommended to drink plenty of water for inflammatory granuloma, and you can choose to gargle with chlorhexidine. Chlorhexidine is a broad-spectrum anti-inflammatory mouthwash, which is very good for maintaining oral hygiene and can also take certain anti-inflammatory drugs;