Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain Tonsillitis is most commonly caused due to bacterial infection of the tonsils and if the infection becomes severe it can cause inflammation inside mouth leading to Stomatitis and can cause inflammation of tongue that can cause inflamed, swollen and painful piercing site.. I would suggest you to start gargling with warm saline solution.. Take anti-inflammatory painkillers like Ibuprofen.. Do betadine mouthwash gargles.. Avoid spicy and chilled foods.. Suck throat lozenges.. In case if the symptoms still does not improve you need to consult an Otolaryngologist and get evaluated and a throat swab culture can help in diagnosis.. A script of antibiotics like Augmentin or Azithromycin can be advised for relief from the symptoms.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.