Hello, There may be a healing period where the texture of the tongue feels different. It is common to bite the tongue as well. This can feel bulky. This difficulty should not last over months. I am concerned if there is swelling with speech affected that a more serious condition present. Limited movement is a concern especially if becoming more restricted. Was the sore tongue seen and diagnosed by a dentist? Please consult a dentist for an exam. Repeat episodes of ulcerated areas do occur especially if viral. Allergic reactions can occur as well. It is recommended to have a clinical exam to get the most accurate diagnosis. Thank you for your inquiry.