Hope you are doing well.
A complete physical examination and throat examination is necessary for correct diagnosis and management of your condition. Bacterial and viral infections are common causes of tonsil enlargement. Mono is usually linked to the Epstein-Barr virus (EBV), but can also be caused by other organisms such as cytomegalovirus (CMV).Treatment for tonsillitis will depend on the cause. To determine the cause, your doctor may perform a rapid strep test or throat swab culture. Monospot test will be positive for mono infection. Treatment will consist of antibiotics to cure the infection in case of bacterial infection. Antibiotics may be given as a single shot or taken 10 days by mouth. If the tonsillitis is caused by a virus, antibiotics won't work and your body will fight off the infection on its own. You may try taking enough rest, drink warm fluids to ease throat pain, use a cool-mist vaporizer or humidifier in your room.
Other measures like gargles with warm saline water may be helpful. Take over-the-counter pain relievers such as acetaminophen or ibuprofen if you have throat pain. Avoid fried oily foods.
This is merely an advice and not a substitute for clinical examination. It is best to clarify your concerns with your ENT specialist and discuss your queries. I hope it helped. Keep me posted on how you are doing.