I AM SUFFERING FROM MOUTH ULSER ON RIGHT SIDE OF

I AM SUFFERING FROM MOUTH ULSER ON RIGHT SIDE OF MY TONGUE. I GOT PET-MRI DONE TO ELIMINATE RISK OF CANCER. THE RESULT WAS NEGATIVE. MY ORAL DOCTOR GAVE ME LYCOSTAR CAPS TWICE A DAY PLUS PREPRO HS ONCE A DAY AT NIGHT. THE PROBLEM DISAPPEARED IN ABUT 10 DAYS. I STOPPED THESE MEDICENES AND AFTER 3 MONTHS THE PROBLEM STARTED AT ANOTHER PLACE. ON TAKING THE ABOVE MEDICENES THE PROBLEM DISAPPEARED IN ABOUT 10 DAYS. AGAIN IT HAS STARTED AT THE OLD PLACE WHERE IT STARTED FOR THE FIRST TIME. THIS HAS BEEN HAPPENING OFF AND ON. SHOULD I CONTINUE USING LYCOSTAR AND PREPRO HS CONTINUOUSLY ? PL ADVICE BEST TREATMENT FOR THIS PROBLEM . P KHANNA 72 YEARS FROM NEW DELHI INDIA