I have a tiny white spot on tip of tongue that is sore to touch, has gone away, but come back and now have had it for a week. Have had this same symptom in the past, but it eventually went away after a day or two; concerns me that it is not going away now. I have good oral hygiene, brush, floss, rinse with mouthwash at night. I am 71 years old, in extreme good health, no prescription meds only take nutritional supplements, exercise every day; BMI 20.5. Is there a homeopathic mouth rinse that I can use?