62% would be the persons pH level when diagnosed.
Hyperbaric Oxygen Therapy is a medical treatment for patients where standard medicine is inadequate. Patients suffering from strokes, cerebral palsy and other diseases where the quality of life is diminished would greatly benefit in this type of treatment. HBOT bombards the body with oxygen, allowing the body to absorb it and replenishes the oxygen and eventually naturally heal it.
Relax... Your mouth does not have the vasculature that would allow you to bleed out. By this time some healing should have formed but it would still be a raw wound. The best thing you should do is press gauze on the wound, as well as put some alcohol, just to keep out infection. Just see your doctor in the morning.
Your mouth if anything should be fine.