Believe me, I know exactly how you feel. If it helps to alleviate your stress at all, one thing you can do is try and prepare for the next round. You can write a first draft of your personal statement (I can't tell you specifically what the question(s) will be, but it will probably be something along the lines of "why are you interested in PHAP/public health, why do you think you'd make a good associate, and why do you want to work for the CDC?"). You can also save time for yourself by starting to collect your documents that you'll need. If you make it all the way through the application process, you will eventually need a copy of all of your transcripts sent (so get in touch with your school(s) registrar offices NOW), and photo copies of your driver's license, passport, and SS card. Better to get those things now than to scramble at the last minute trying to collect them. Remember that if you do make it to the next round, there will only be a short window of time for you to submit the paperwork/documents that they ask for in order to progress to the next round after that.
Other than that, the best I can suggest is to just keep going on with your life. Do what you do on a daily basis, and don't worry about this application stuff until you hear back from them. There really is nothing you can do to make the process go any faster, and once you submit your application, there is nothing you can do to change the outcome. So there is no point in worrying about it. Whatever will happen will happen. I'm sorry if that sounds pedantic, but it really is true. So take a breath, do what you like to do to relax in your free time, and hopefully good news will come when you finally do hear back from them!
