There is a small meat ball growing in the mouth
There are bulges in the mucosa of the lip, and mucocysts may exist locally. You can go to the stomatology department of the hospital to check the local conditions. If you don’t get better for a long time, you can surgically remove them under local anesthesia. Gargle with some compound chlorhexidine mouthwash. Avoid eating spicy and stimulating food in the near future and maintain oral hygiene.