Consult a dentist as soon as possible.ulcer for long time may harm u..it may b due to sharp cusps which can b grinded.lymphnodes problem may b due to wisdom tooth..

Hello sir....    Your history seems  **  You may have irritation from any sharp objects( sharp  teeth cusps) which cause irritation and  leads to canker sore.. **Also your history of lymph node pain and reffered pain in ear seems  you may have impacted wisdom teeth that need to be surgically removed... MANAGEMENT: ** if the irritation is due to sharp teeth cusps then simple trimming of that sharp cusps will releve your symptoms... ** If it is due to impacted wisdom teeth,that needs to be Surgically removed followd by analgesics and pain killers .. IMPACTED  WISDOM TEETH is one that fails to erupt in particular time and space COMPLICATIONS OF IMPACTED WISDOM TEETH: ** pain in gum region **Difficulty in opening mouth **soreness of jaw **crowding of nearby tooth **Decaying of adjacent teeth **Food lodgement which cause bad odour nd pain ** cyst formation  

Your symptoms indicates ulcer formation due to chronic irritation from sharp object. Check any sharp pointed tooth along the side both upper and lower side of affected side of jaw Secondly go for a xray to rule out any chances of impacted tooth in bone

Hi....Ulcer could be due to sharp tooth and pain can be due to wisdom tooth. Avoid self medication and visit your nearest dentist for permanent relief.

Seems like an infection related to a lower tooth most likely wisdom tooth. Consult a dentist to get an X-ray done and your dentist will advise you accordingly