if you had a stomach ulcer you would know, you would be frequently burping, your stomach would have a pinching like feeling in a certain area when digesting food, your burps would also taste wierd and not something you just ate, it would be slightly acidic. Also there would be a little bit of blood in your poop.
Try like drinking a lot of water and keeping your mouth clean before you smoke, especially if you have a minor laceration in your mouth, smoking + small cut in mouth sounds like an infection waiting to happen.
Just in case go see a doctor you could have the big K's, Kancer in the mouth, but that's probably going over board.
also from your explanation sounds like a canker sore on your tongue, but that's weird.
Last edited by T0ribush; Sep 7, 2011 at 09:33 AM.