thanks for your query, i have gone through your query. the reccurent ulcers could be because of the reccurent aphthous stomatitis or herpetic ulcers or errosive lichen planus. the most common cause for these conditions will be the stress. consult your oral physician and get it ruled out regarding the above said conditions. you can take topical anesthetic analgesic and topical steroids. if the ulcer doesnt heal then it has to be biopsied to rule out other non healing ulcers. i hope my answer will help you.