Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain it seems that swollen tonsil or Tonsillitis along with sore throat or Pharyngitis and low grade fever can b due to either bacterial or viral infection.. I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like throat swab culture can help in diagnosis and treatment can be done accordingly.. You can be advised a course of antibiotics like Augmentin or Azithromycin, anti inflammatory painkiller like Ibuprofen, fever reducer like Acetaminophen or Tylenol and also do warm saline gargles, steam inhalations and use a humidifier in your room.. You can also be advised to suck throat lozenges and chew a Vitamin C pellet daily.. Drink plenty of warm fluids and take a soft diet.. Take appropriate rest.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.