Welcome to the club no one wants to join!
The time between discovery and diagnosis is probably the scariest time--we've all been there. The best pieces of advice I can give you are 1.Don't go alone to these early appointments (if at all possible). You'll never be able to remember anything they tell you because there's SO much, and your mind's already going a mile a minute. 2. You'll be tempted, but don't try to research oral cancer on line. It's nearly all doom and gloom.
When are you supposed to get your results? My own biopsy was more a confirmation than anything--I'd already figured that I had tongue cancer. But then, I've always been of the "expect the worst, you'll be pleasantly disappointed" mindset.
Please let us know how it turns out.