Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern.. As per your complain it seems that you are suffering from Apthous ulcers and the common causes of it can be deficiency of iron and vitamin B12, stress, acid reflux, excess intake of sour foods, physical injury with some hard food or dentures, dry mouth, hormonal imbalances,diabetes etc.. I would suggest you to consult an Oral Physician and get evaluated and he can also advise you to get investigations done like Hemoglobin %, serum Vitamin B12, diabetes, hormonal profile etc.. In case of persisting ulcers which does not relieve with other treatments needs to be treated with steroids.. As of now you can gargle with soda bicarb solution, gargle with numbing mouthwash containing Lignocaine, take multvitamin supplements, suck ice and do cold water rinses.. Avoid spicy and hot foods and drink plenty of water.. Mainatin a god oral hygiene.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.