It sounds like someone likes to worry 😉. I know waiting until December 1st is not pleasant but think positively. We're all scientists here and when you reach a conclusion in a laboratory setting nothing is 100% thats why there is a confidence interval. There are some cells, molecules, subjects etc that aren't doing the norm yet we make statements with certainty. Take dental school much the same way. As long as you interviewed and felt good about it your chances are very good. Also if you got an interview prior to December you will most likely get in somewhere. Enjoy the time before dental school don't waste it fretting about things that are out of your control. There is plenty of time in Dental school for that j/k 🙂