U have an enlarged right tonsils called acute or follicular tonsillitis. On examination we can confirm it. If u have pain while swallowing then confirm it.
Also do u have any irritation in your throat or any cough or discomfort or cold.
I prescribe on antibiotics, take amoxycillin+ clavulanic acid(Augmentin Duo)
for 5 days(1-0-1) after food. Take 625 mg if u are an adult and if u are a child below 14, then take 375 mg.
Do hot saline gargle and betadine gargles alternatively.
Take Paracetamol if u have fever.
Hello and hope you are doing well.
Considering your symptoms of point tenderness and pain inside the mouth, your symptoms could be due to temporomandibular (TMJ) joint arthritis. This is the jaw joint and inflammation of this joint can cause pain on opening the mouth and tenderness on palpating behind the ear. As you have tongue ulcers, it could also be a lymph node enlargement. Please consult a dentist for assessment. He may even ask for blood tests and an X ray.
Hope this helped and do keep us posted.