Q. I have a stomacl ulcer and find going to the dentist an ordeal as I am in considerable stomach pain as well as toothache. I tried going yesterday for a fillling but had to explain the problem and leave again without having the procedure done. Needless to say as soon as i got home the pain started to ease. Last time I was at this dentist I had severe diahorrrea before a root canal was attempted, I WONDER IF the dentist usually refers to the hospita in this sort of case.,