No I haven't volunteered at a hospital or anything. I was apart of a pre-medical club in undergrad which is probably why they asked me that question. I think it's important to explore all your career options in undergrad before committing to one just to make sure its something you
REALLY want to pursue. So your hospital experience definitely won't hurt.
I'm a Texas resident. I interviewed November 20th and got accepted on December 1st. You have a post-December interview so that might effect how long it takes for them to make a decision. Don't be afraid, try to stay calm. Especially during the interview. You will do great!