Ok, well as far as being an OSS, don't worry. I'm from IL, had my interview in March, and got accepted right away. If you've already gotten an interview, you're in pretty good shape.
The adcom meets every month i think. so it doesn't take too long to get an answer. Of course if your interview is right after one of their meetings, it'll take a few weeks, since you'd have to wait til they meet again.
In my case, I interviewed on a Tuesday, the adcom met the following monday, and I got a phone call on the wednesday from Paula Watkins.
So everyone who's worried that they didnt get a phone call yet, try not to stress...mine didn't come until a couple days after their meeting. plus i know there were some people who didnt get a call, and just got the acceptance packet.
Hope this helped...even just a little.
I'm off to study now!