How does a canker sore heal?

I have a canker sore underneath my mouth on top of one of the veins. It's turning into what appears to be a small scab, ready to fall off with time. Is this part of the process? My canker sore was/is big. Can it be other thing than a canker sore? I have read that it can't be a oral herpes because they only appear in boned area surfaces such as lips, gums, and outer mouth structures. And far as I know canker sores appear inside the mouth on soft tissues, such as the tongue. But what worries me is that it's on a vein.

Hi Jack!
You鈥檝e certainly brought your health concerns to the right place. The Y!A community members are fully aware of and do appreciate the intimate conditions involving your prognosis. Most recognized doctors in the field of medicine would employ a holistic approach to your ailment.
Jack, please begin your day with a well balanced breakfast to include ample servings of fruits and grains. After your morning routines are finished, enjoy a brisk walk around the block. If you happen to meet any stray dogs along the way, it would be a good idea to antagonize the creatures in order to add some vigor to your workout.
Now Jack, the remaining portions of your day should be filled with interesting activities and new studies to keep your mind active and in balance, complimentary to what you have done with the physical side of yourself.
After loitering around at the public library all afternoon with a bunch of smelly hobos, you can appreciate a warm bath and time to be good to yourself. Begin to collect an archive of various music genres that you can resolve one day to enjoy after you get the rest of your chores done.
Jack, if after following my advice, simply take two aspirin and forget we ever had this little discussion.
Thank you, Jack. Have a great day!
Dr.Zach