Thanks for asking the query,
Your clinical history and symptoms suggest that you are suffering with some infection in the oral cavity due to which the lymph
nodes are enlarged.
I would suggest you to visit a Dentist
and get thorough clinical examination, check for any abnormality of TMJ , if necessary take an OPG radiograph to rule out presence of any cyst.
Oral ulcers occurs usually due to nutritional deficiencies, immunological disorders, allergic reactions, hormonal
Apply cortisone acetate
topically over the affected area in the mouth.
Take lukewarm saline gargles, use antiseptic mouthwash gargles twice daily.
tablets, avoid eating of hot and spicy food stuffs.
Hope this helps out.