Infections under the tongue are potentially very serious. The swelling can make swallowing and breathing difficult.
You should seek medical attention immediately by either the emergency department at the hospital or with a Board Certified Oral and Maxillofacial Surgeon or ENT Surgeon.
Information contained within this reply is intended solely for general educational purposes and is not intended nor implied to be a medical diagnosis or treatment recommendation. This is not a substitute for professional medical advice relative to your specific medical condition or question. Always seek the advice of your own doctor for medical condition. Only your doctor can provide specific diagnoses and therapies.